| Email : karnawijaya@ugm.ac.id |
| Education Background : |
| Doctor, Dr.rer.nat, Technische Univ Carolo Wilhelmina Braunschweig, 1999 Master, M.Eng, Waseda University, 1993 Undergraduate, Drs, Kimia, Universitas Gadjah Mada, 1987 |
| Research Interest : |
| Nanomaterial, katalis, biofuel, macromolecule Aktif meneliti dalam bidang nanomaterial untuk berbagai aplikasi dan tujuan, serta aktif meneliti pada tentang biofuel. |
| Research Cluster/Group : |
| Teori/Komputasi, Material, Katalis |
| List of Publications : |
|
(1) Saviola, A. J.; Syoufian, A.; Oh, W. C.; Wijaya, K. Atmospheric Hydrotreatment of Used Palm Cooking Oil over Nickel-Dispersed Phosphated Zirconia as Highly Stable Nano-Catalyst for Bio-Jet Fuel Production. Inorg. Chem. Commun. 2025, 173. https://doi.org/10.1016/j.inoche.2024.113790. (2) Lestari, D. Y.; Wijaya, K.; Syoufian, A.; Hariani, P. L.; Utami, M.; Saviola, A. J.; Fitria, R. A.; Wahyuningsih, P.; Bhagaskara, A.; Wangsa, W.; Chang, S. W.; Ravindran, B. Unveiling the Potency of Graphene-Based Materials for Water Remediation: A Brief Review. J. Mol. Struct. 2025, 1335. https://doi.org/10.1016/j.molstruc.2025.142018. (3) Zainul, R.; Wijaya, K.; Prasetyo, N.; Siddiq, N. A.; Wijaya, A. R.; Elkhooly, T. A.; Ahmed, S.; Goh, K. W. Advances in Electrochemical Sensor Design Using Hybrid Carbon Nanotube Composites for Simultaneous Detection of Dopamine and Uric Acid. J. Med. Pharm. Chem. Res. 2025, 7 (8), 1536–1553. https://doi.org/10.48309/jmpcr.2025.470948.1360. (4) Lestari, D. Y.; Syoufian, A.; Hariani, P. L.; Amin, A. K.; Oh, W. C.; Saviola, A. J.; Wijaya, K. Biogenic Synthesis of Silver Nanoparticles/Reduced Graphene Oxide (AgNPs/RGO) Mediated Nephelium Lappaceum Leaf Extract as an Effective Solid Acid Catalyst for Liquid-Phase Benzene Nitration. Results Chem. 2025, 13. https://doi.org/10.1016/j.rechem.2024.102014. (5) Lestari, D. Y.; Syoufian, A.; Hariani, P. L.; Saviola, A. J.; Oh, W. C.; Amin, A. K.; Pratika, R. A.; Wijaya, K. Facile Green Synthesis of Silver Nanoparticles Decorated on Sulfonated Graphene Oxide by Rambutan (Nephelium Lappaceum) Leaf Extract and Application as a Catalyst for Converting Benzene into Nitrobenzene. Results Eng. 2025, 25. https://doi.org/10.1016/j.rineng.2025.104321. (6) Fitria, R. A.; Prasetyo, N.; Saviola, A. J.; Trisunaryanti, W.; Syoufian, A.; Amin, A. K.; Oh, W. C.; Wijaya, K. Synthesis of Cobalt-Dispersed Sulfated Zirconia Nanocatalyst for the Hydroconversion of Used Palm Cooking Oil into Bio-Jet Fuel. Case Stud. Chem. Environ. Eng. 2025, 11. https://doi.org/10.1016/j.cscee.2024.101052. (7) Saviola, A. J.; Vebryana, M. F.; Wangsa, W.; Prastyo, P.; Syoufian, A.; Saputra, D. A.; Timuda, G. E.; Hauli, L.; Oh, W. C.; Wijaya, K. Performance Comparison of Molybdenum-Impregnated Sulfated Mesoporous Silica Catalysts by Spray and Wet Impregnation in Transforming Used Palm Cooking Oil into Bio-Jet Fuel. Chem. Africa 2025. https://doi.org/10.1007/s42250-025-01229-9. (8) Srikrajang, S.; Kabir, L.; Sagadevan, S.; Wijaya, K.; Oh, W.-C. Representative Modeling of Biocompatible MXene Nanocomposites for Next-Generation Biomedical Technologies and Healthcare. J. Mater. Chem. B 2025, 13 (9), 2912–2951. https://doi.org/10.1039/d4tb02478h. (9) Trisunaryanti, W.; Wijaya, K.; Saputro, M. D. I. The Effect of Ni/AC and Mo/AC Catalyst Arrangements on the Activity and Selectivity for Hydrotreating Palm Cooking Oil into Biojet Fuel. Indones. J. Chem. 2025, 25 (2), 404–419. https://doi.org/10.22146/ijc.99071. (10) Rozana, K.; Dewi, A. K.; Poernomo, H.; Ningtyas, S. A.; Wijaya, K. Zr–Hf Separation of Zirconium Oxychloride Products Using Tributyl Phosphate (TBP) in Kerosene. J. Indian Chem. Soc. 2025, 102 (4). https://doi.org/10.1016/j.jics.2025.101627. (11) Wijaya, K.; Ningrum, T. S.; Saviola, A. J.; Prasetyo, N.; Ardelia, Z. L.; Fitria, R. A.; Gea, S.; Hauli, L.; Amin, A. K.; Saputri, W. D.; Setiawan, A.; Oh, W. C. Development of Chromium-Impregnated Sulfated Silica as a Mesoporous Catalyst in the Production of Biogasoline from Used Cooking Oil via a Hydrocracking Process. React. Kinet. Mech. Catal. 2024, 137 (2), 971–989. https://doi.org/10.1007/s11144-024-02574-5. (12) Sabilladin, A.; Saviola, A. J.; Wijaya, K.; Hutama, A. S.; Pradipta, M. F.; Saputri, W. D.; Ismail, H.; Budhijanto, B.; Oh, W. C.; Ravindran, B. Optimizing Nitrobenzene Synthesis Catalyzed by Sulfated Silica (SO4/SiO2) through Response Surface Methodological Approach. Korean J. Mater. Res. 2024, 34 (7), 341–354. https://doi.org/10.3740/MRSK.2024.34.7.341. (13) Wijaya, K.; Ramadhani, S.; Saviola, A. J.; Prasetyo, N.; Gea, S.; Hauli, L.; Amin, A. K.; Saputri, W. D.; Saputra, D. A.; Darsono, N. Efficient Conversion of Used Palm Cooking Oil into Biogasoline over Hydrothermally Prepared Sulfated Mesoporous Silica Loaded with NiMo Catalyst. Results Eng. 2024, 24. https://doi.org/10.1016/j.rineng.2024.103185. (14) Alifi, A.; Saviola, A. J.; Wijaya, K.; Syoufian, A.; Prasetyo, N.; Wahyuningsih, P.; Fitria, R. A.; Hauli, L.; Amin, A. K.; Oh, W. C. Preparation and Catalytic Evaluation of Phosphated Zirconia Nanopowder for Ethanol Dehydration into Diethyl Ether. J. Indian Chem. Soc. 2024, 101 (8). https://doi.org/10.1016/j.jics.2024.101204. (15) Wahyuningsih, P.; Wijaya, K.; Hutama, A. S.; Saviola, A. J.; Purnama, I.; Oh, W. C.; Aziz, M. Pillared Bentonite Materials as Potential Solid Acid Catalyst for Diethyl Ether Synthesis: A Brief Review. Korean J. Mater. Res. 2024, 34 (5), 223–234. https://doi.org/10.3740/MRSK.2024.34.5.223. (16) Mahmudah, R.; Saviola, A. J.; Sudiono, S.; Prasetyo, N.; Wijaya, K. An Effective Synthesis of Phosphated Silica (PO4/SÍO2) Catalyst and Its Performance for Converting Ethanol into Diethyl Ether (DEE). In Solid State Phenomena; Trans Tech Publications Ltd: Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia, 2024; Vol. 365, pp 77–86. https://doi.org/10.4028/p-6iURwp. (17) Wahyuningsih, P.; Saviola, A. J.; Wijaya, K.; Hutama, A. S.; Oh, W. C.; Hauli, L. Porous Al2O3-Pillared Bentonite Synthesized by Sonochemistry and Its Performance as a Catalyst in Diethyl Ether Production via Ethanol Dehydration. React. Kinet. Mech. Catal. 2024, 137 (4), 2231–2252. https://doi.org/10.1007/s11144-024-02659-1. (18) Saviola, A. J.; Wijaya, K.; Syoufian, A.; Saputri, W. D.; Saputra, D. A.; Aziz, I. T. A.; Oh, W. C. Hydroconversion of Used Palm Cooking Oil into Bio-Jet Fuel over Phosphoric Acid-Modified Nano-Zirconia Catalyst. Case Stud. Chem. Environ. Eng. 2024, 9. https://doi.org/10.1016/j.cscee.2024.100653. (19) Saviola, A. J.; Wijaya, K.; Syoufian, A.; Vebryana, M. F.; Anggraeni, W.; Rozana, K.; Darsono, N.; Saputra, D. A.; Saputri, W. D. Fixing Cobalt Metal onto Mordenite through Spray Impregnation and Its Evaluation as a Catalyst in Transforming Used Coconut Cooking Oil into Biojet Fuel. Commun. Sci. Technol. 2024, 9 (2), 356–365. https://doi.org/10.21924/cst.9.2.2024.1535. (20) Fatwa, M. M.; Saviola, A. J.; Pradipta, M. F.; Fitria, R. A.; Prasetyo, N.; Wijaya, K. Nickel Oxide-Impregnated Phosphated Silica Catalyst: Synthesis and Application for Ethanol Dehydration into Diethyl Ether (DEE). In Solid State Phenomena; Trans Tech Publications Ltd: Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia, 2024; Vol. 365, pp 87–97. https://doi.org/10.4028/p-qO2JWa. (21) Hutama, A. S.; Marlina, L. A.; Akram, M. B.; Wijaya, K.; Sari, R. M.; Saputri, W. D. Atmospheric Degradation Mechanism of Isoamyl Acetate Initiated by OH Radicals and Cl Atoms Revealed by Quantum Chemical Calculations and Kinetic Modeling. J. Phys. Chem. A 2024, 128 (39), 8483–8500. https://doi.org/10.1021/acs.jpca.4c05204. (22) Trisunaryanti, W.; Wijaya, K.; Kartini, I.; Purwono, S.; Mara, A.; Rahma, A. S. Hydrodeoxygenation of Refined Palm Kernel Oil (RPKO) into Bio-Jet Fuel Using Mo/H-ZSM-5 Catalysts. React. Kinet. Mech. Catal. 2024, 137 (2), 843–878. https://doi.org/10.1007/s11144-023-02560-3. (23) Trisunaryanti, W.; Wijaya, K.; Kartini, I.; Purwono, S.; Mara, A.; Dewi, I. A. Hydrodeoxygenation of Refined Palm Kernel Oil Into Bioavtur Using Spray-Dry Impregnated Activated Carbon Supported-Mo Catalysts. Evergreen 2024, 11 (2), 652–664. (24) Yulianto, A.; Trisunaryanti, W.; Triyono, T.; Saviola, A. J.; Wijaya, K.; Kartini, I.; Purwono, S.; Rodiansono, R.; Mara, A. Effect of Arrangements in an Atmospheric Hydrotreating Reactor of Cobalt and/or Molybdenum Dispersed on Activated Carbon Catalysts toward Bio-Jet Fuel Production from Refined Palm Oil. Case Stud. Chem. Environ. Eng. 2024, 10. https://doi.org/10.1016/j.cscee.2024.100894. (25) Kabir, L.; Wijaya, K.; Oh, W.-C. Progressive MXene-Based Photocatalytic and Electrocatalytic Sustainable Reduction of CO2 to Chemicals: Comprehensive Review and Future Directions. Sustain. Energy Fuels 2024, 8 (12), 2535–2569. https://doi.org/10.1039/d4se00405a. (26) Rozana, K.; Dewi, A. K.; Poernomo, H.; Oh, W.-C.; Wijaya, K. Separation of Zirconium and Hafnium from Zirconium Oxychloride (ZOC) Synthesis of Kalimantan Zircon Sand Concentrate Using Extraction Method with Tributyl Phosphate (TBP)-Dodecane in Nitric Acid Medium. Korean J. Mater. Res. 2024, 34 (5), 247–253. https://doi.org/10.3740/MRSK.2024.34.5.247. (27) Enjarlis, E.; Wijaya, K.; Karomah, E. F.; Huda, S. Inactivation of Avian Influenza Virus of Subtype H5N1 and H9N1 in The Vaccine Industrial Wastewater Treatment with an Advanced Oxidation Process Base on Ozone. Int. J. Technol. 2024, 15 (6), 1898–1910. https://doi.org/10.14716/ijtech.v15i6.5814. (28) Wijaya, K.; Saviola, A. J.; Amin, A. K.; Vebryana, M. F.; Bhagaskara, A.; Ekawati, H. A.; Ramadhani, S.; Saputra, D. A.; Agustanhakri, A. Performance of Hydrothermally Prepared NiMo Dispersed on Sulfated Zirconia Nano-Catalyst in the Conversion of Used Palm Cooking Oil into Jet Fuel Range Bio-Hydrocarbons. Bull. Chem. React. Eng. Catal. 2024, 19 (2), 361–371. https://doi.org/10.9767/bcrec.20157. (29) Purnama, I.; Trisunaryanti, W.; Wijaya, K.; Mutamima, A.; Oh, W.-C.; Boukherroub, R.; Aziz, M. Multi-Pathways for Sustainable Fuel Production from Biomass Using Zirconium-Based Catalysts: A Comprehensive Review. Energy Technol. 2024, 12 (2). https://doi.org/10.1002/ente.202300901. (30) Ullah, K.; Cho, K.-S.; Wijaya, K.; Oh, W.-C. Bandgap Energy Controlling and Electrochemical Performances of Quaternary Metal Oxide Combined Graphene-TiO2 Nanocomposite and Its Photocatalytic Hydrogen Evolution. Inorg. Chem. Commun. 2024, 167. https://doi.org/10.1016/j.inoche.2024.112541. (31) Wijaya, K.; Bhagaskara, A.; Sani, M. F. M.; Vebryana, M. F.; Pratama, F. A.; Anggraeni, W.; Amin, A. K.; Ramadhani, F. A.; Saviola, A. J. Sonochemically Modified Lapindo Mud Using Sulfuric Acid for Efficient Adsorption of Phenol in Aqueous Media and Real Wastewater Samples. Bull. Chem. React. Eng. Catal. 2024, 19 (4), 635–648. https://doi.org/10.9767/bcrec.20228. (32) Tahir, I.; Wijaya, K.; Krismayanti, D.; Saviola, A. J.; Wahab, R. A.; Amin, A. K.; Saputri, W. D.; Pratika, R. A. Microwave Radiation-Assisted Chitin Deacetylation: Optimization by Response Surface Methodology (RSM). Korean J. Mater. Res. 2024, 34 (2), 85–94. https://doi.org/10.3740/MRSK.2024.34.2.85. (33) Kabir, L.; Wijaya, K.; Li, J.; Unruangsri, J.; Oh, W.-C. A Review for MXene-Based Hybrid Nanocomposites toward Electro-/Photocatalytic Hydrogen Evolution Reactions. J. Environ. Chem. Eng. 2024, 12 (6). https://doi.org/10.1016/j.jece.2024.114483. (34) Falah, L. I.; Wijaya, K.; Vebryana, M. F.; Saviola, A. J. Conversion Single Reagent of N-Propanol to 1,1-Dipropoxypropane Using Cr/Activated Carbon Catalyst. In Solid State Phenomena; Trans Tech Publications Ltd: Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia, 2024; Vol. 365, pp 55–62. https://doi.org/10.4028/p-5LqUNp. (35) Tahir, I.; Yudha, E.; Pradipta, M. F.; Wijaya, K.; Vebryana, M. F.; Saviola, A. J.; Wahab, R. A. Supramolecular Modeling of Molecularly Imprinted Chitosan-Thiamin Using Density Functional Theory. In Key Engineering Materials; Trans Tech Publications Ltd: Department of Chemistry, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Sekip Utara, Yogyakarta, 55281, Indonesia, 2024; Vol. 990, pp 103–116. https://doi.org/10.4028/p-bs09JO. (36) Pratika, R. A.; Nafisah, Z.; Yuliana, Y.; Syarpin, S.; Iqbal, R. M.; Ysrafil, Y.; Wijaya, K. Conversion of Used Cooking Oil into Biodiesel by Utilizing Zirconia Catalyst as Acid Catalyst (SO4/ZrO2) and Base Catalyst (ZrO2/CaO). Arab. J. Sci. Eng. 2024. https://doi.org/10.1007/s13369-024-09520-6. (37) Asri, W. R.; Hasanudin, H.; Wijaya, K. Hydroconversion of Crude Palm Oil Over Highly Dispersed Porous Silica Modified Zirconium Nitride: Effect of EDTA and KHF Template. Silicon 2024, 16 (1), 83–97. https://doi.org/10.1007/s12633-023-02659-1. (38) Utami, M.; Rahmadhani, L. S.; Wijaya, K.; Ravindran, B.; Alam, M. W.; Hauli, L.; Rianjanu, A.; Purnama, I.; Purwiandono, G. High Effectiveness Self-Cleaning Activity on TiO2/RGO Nanocomposite Synthesized by Mangosteen (Garcinia Mangostana L.) Peel Extract. Results Eng. 2024, 24. https://doi.org/10.1016/j.rineng.2024.103593. (39) Saleh, M.; Hi Djumat, H.; Wijaya, K.; Hofer, T. S. Toward Advanced QM/MM MD Simulations of Solid-Liquid Interfaces-Adsorption and Proton Transfer of Multilayer Water on R-TiO2(001). J. Phys. Chem. C 2024, 128 (23), 9766–9775. https://doi.org/10.1021/acs.jpcc.4c02299. (40) Trisunaryanti, W.; Wijaya, K.; Tazkia, A. M. Preparation of Ni/ZSM-5 and Mo/ZSM-5 Catalysts for Hydrotreating Palm Oil into Biojet Fuel. Commun. Sci. Technol. 2024, 9 (1), 161–169. https://doi.org/10.21924/cst.9.1.2024.1442. (41) Kabir, L.; Wijaya, K.; Li, J.; Unruangsri, J.; Oh, W.-C. Representative Modeling of MXene-Based Hybrid Nanocomposites for Catalytic Hydrogen Evolution Reactions: A Comprehensive Review. Sustain. Energy Fuels 2024, 8 (24), 5672–5710. https://doi.org/10.1039/d4se01207k. (42) Kabir, L.; Wijaya, K.; Oh, W.-C. Latest Technologies in Solid-State Electrolytes Related to Energy Storage Applications Based on 2D MXenes. In Advanced Hybrid Nanomaterials for Energy Storage; Taylor and Francis: Department of Advanced Materials Science and Engineering, Hanseo University, Chungnam, Seosan, South Korea, 2024; pp 1–41. https://doi.org/10.1201/9781003561262-1. (43) Wijaya, K.; Amin, A. K.; Hauli, L.; Saputri, W. D.; Lestari, D. Y.; Saviola, A. J.; Fitria, R. A.; Bhagaskara, A.; Tahir, I.; Oh, W.-C.; Aneu, A.; Pratika, R. A. Nanomaterials for the Development of Electrodes. In Advanced Hybrid Nanomaterials for Energy Storage; Taylor and Francis: Department of Chemistry Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia, 2024; pp 143–174. https://doi.org/10.1201/9781003561262-6. (44) Asri, W. R.; Hasanudin, H.; Wijaya, K. Highly Active Mesoporous Zirconium Nitride Immobilized on SiO2 Synthesized by Complex-Assisted Method with EDTA and KHP for Catalytic Hydroconversion of Crude Palm Oil. Catal. Surv. from Asia 2024, 28 (1), 74–87. https://doi.org/10.1007/s10563-023-09413-y. (45) Kabir, L.; Qi, J.; Wijaya, K.; Sagadevan, S.; Yoon, C.-M.; Ullah, K.; Oh, W.-C. Recent Advances and Latest Technologies in Energy Storage Applications Based on 2D MXene. J. Energy Storage 2024, 80. https://doi.org/10.1016/j.est.2023.110335. (46) Agharadatu, R. H.; Wijaya, K.; Hauli, L.; Oh, W.-C. Application of Mesoporous NiMo/Silica (NiMo/SiO2) as a Catalyst in the Hydrocracking of Used Cooking Oil into Jet Fuel. Silicon 2024, 16 (1), 331–343. https://doi.org/10.1007/s12633-023-02683-1. (47) Wangsa, W.; Saviola, A. J.; Wijaya, K.; Bhagaskara, A.; Hauli, L.; Saputra, D. A. Utilization of Laboratory Glove Waste for Fuel Production through Pyrolysis-Hydrocracking Consecutive Process Catalyzed by Sulfated Indonesian Natural Zeolite. React. Kinet. Mech. Catal. 2024, 137 (3), 1495–1514. https://doi.org/10.1007/s11144-024-02595-0. (48) Bhagaskara, A.; Saputra, D. A.; Saviola, A. J.; Wijaya, K.; Oh, W.-C.; Rahayu, S.; Gumelar, M. D.; Saudi, A. U.; Agustanhakri, A.; Budiman, A. H.; Indrijarso, S. Recycling of Nickel Metal from Spent Nickel-Manganese-Cobalt (NMC) Cathode Batteries Using H3PO4–H2C2O4 Solution Combination as an Efficient Leaching Agent. Case Stud. Chem. Environ. Eng. 2024, 10. https://doi.org/10.1016/j.cscee.2024.100844. (49) Saputra, D. A.; Amin, A. K.; Wijaya, K.; Triyono, T.; Trisunaryanti, W.; Fitroturokhmah, A.; Oh, W.-C. MgO/γ-Alumina and CaO/γ-Alumina Catalysts for the Transesterification of Castor Oil (Ricinus Communis) into Biodiesel. Iran. J. Chem. Chem. Eng. 2024, 43 (4), 1622–1634. https://doi.org/10.30492/ijcce.2023.2004770.6081. (50) Wijaya, K.; Setyono, R. D. P.; Pratika, R. A.; Heraldy, E.; Suseno, A.; Hakim, L.; Tahir, I.; Oh, W.-C.; Saviola, A. J. Dual Metal NiMo Dispersed on Silica Derived from Rice Husk Ash as a Catalyst for Hydrocracking of Used Palm Cooking Oil into Liquid Biofuels. Commun. Sci. Technol. 2024, 9 (2), 219–226. https://doi.org/10.21924/cst.9.2.2024.1480. (51) Zainul, R.; Chaya, R.; Wijaya, K.; Rahmawati, F.; Laghari, I. A.; Rahmadiawan, D.; Abdullah, M. Advances in Electrochemical Technologies for Sustainable Wastewater Treatment and Chemical Synthesis: Mechanisms, Challenges, and Prospects. J. Med. Pharm. Chem. Res. 2024, 6 (2), 140–156. https://doi.org/10.48309/JMPCR.2024.424054.1031. (52) Wijaya, K.; Annisa, R. N.; Setyopratiwi, A.; Syoufian, A.; Hasanudin, H.; Utami, M. Hydrocracking of Palm Oil Into Biofuel Over Ni-Al2O3-Bentonite (Aluminosilicate) Nanocatalyst. In Sustainability Engineering: Challenges, Technologies, and Applications; CRC Press: Department of Chemistry, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Yogyakarta, Indonesia, 2023; pp 61–82. https://doi.org/10.1201/9781003167693-2. (53) Agipa, A. I.; Saputri, W. D.; Syoufian, A.; Sudiono, S.; Budiman, A.; Lestari, M. F.; Hauli, L.; Wijaya, K. Modification of Nanozirconia with Sulfuric Acid and Calcium Oxide as Heterogeneous Catalysts for Biodiesel Production from Used Coconut Cooking Oil. Moroccan J. Chem. 2023, 11 (3), 854–870. https://doi.org/10.48317/IMIST.PRSM/morjchem-v11i3.40434. (54) Utubira, Y.; Wijaya, K.; Kunarti, E. S. Microwave Assisted Palm Oil Biodiesel Production Using KOH/ZrO2-Bentonite as Catalyst. In AIP Conference Proceedings; D., M., N., H., H., K., C.N., L., I.W., S., Eds.; American Institute of Physics Inc.: Chemistry Education Study Program, Faculty of Teacher Training and Educational Sciences, Pattimura University, Ambon, 97234, Indonesia, 2023; Vol. 2642. https://doi.org/10.1063/5.0110630. (55) Trisunaryanti, W.; Wijaya, K.; Kartini, I.; Purwono, S.; Mara, A.; Budiansyah, A. Preparation of Mo-Impregnated Mordenite Catalysts for the Conversion of Refined Kernel Palm Oil into Bioavtur. Commun. Sci. Technol. 2023, 8 (2), 226–234. https://doi.org/10.21924/cst.8.2.2023.1288. (56) Aneu, A.; Pratika, R. A.; Gea, S.; Wijaya, K.; Oh, W.-C. Silica-Based Catalysts for Biodiesel Production: A Brief Review. Silicon 2023, 15 (12), 5037–5047. https://doi.org/10.1007/s12633-023-02403-9. (57) Gea, S.; Hutapea, Y. A.; Piliang, A. F. R.; Pulungan, A. N.; Rahayu, R.; Layla, J.; Tikoalu, A. D.; Wijaya, K.; Saputri, W. D. 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CMUJI Arief, HD Pranowo, M Mudasir, K Wijaya Nat. Sci 20 (1), e2021010 2021 Conversion of bioethanol to diethyl ether catalyzed by sulfuric acid and zeoliteWF Winata, K Wijaya, A Mara, W Kurniawati Journal of the Indonesian Chemical Society 3 (3), 151-151 2 2020 Antimicrobial Imperata cylindrica paper coated with anionic nanocellulose crosslinked with cationic ionsD Zulfiana, A Karimah, SH Anita, N Masruchin, K Wijaya, L Suryanegara, … International journal of biological macromolecules 164, 892-901 8 2020 The synthesis of SO4/ZrO2 and Zr/CaO catalysts via hydrothermal treatment and their application for conversion of low-grade coconut oil into biodieselMS La Ore, K Wijaya, W Trisunaryanti, WD Saputri, E Heraldy, … Journal of Environmental Chemical Engineering 8 (5), 104205 23 2020 Application of Biogasoline in a Four-stroke Motorcycle EngineS Saputra, K Wijaya ASEAN Journal on Science and Technology for Development 37 (2), 51–55-51–55 2020 Synthesis and Characterization of Diethanolamide (Surfactant) from Cao/Zeolite-Catalysed Used Cooking OilW Lusiana, A Nadia, S Sudiartono, PL Hariani, A Setyopratiwi, K Wijaya Journal of the Indonesian Chemical Society 3 (2), 81-81 2020 Catalytic Synthesis of Diethanolamide Surfactant from Used Cooking OilM Utami, K Wijaya, A Syoufian, SH Wicaksono EKSAKTA: Journal of Sciences and Data Analysis, 133-138 2 2020 Optimizations of microwave-assisted extraction and transesterification of bio-crude oil from spirulina (Arthrospira platensis)A Purnama, K Wijaya, I Tahir, EA Suyono, A Budiman Korean Journal of Chemical Engineering 37 (3), 466-474 5 2020 Indonesian Modified Clay for Dye Waste TreatmentI Sumarlan, I Fatimah, K Wijaya Acta Chimica Asiana 3 (1), 122-126 1 2020 Fuel production from LDPE-based plastic waste over chromium supported on sulfated zirconiaL Hauli, K Wijaya, A Syoufian Indonesian Journal of Chemistry 20 (2), 422-429 8 2020 Physico-chemical properties of nickel promoted sulfated zirconia powder prepared using different proceduresAK Amin, W Trisunaryanti, K Wijaya Asian Journal of Chemistry 32 (3), 555-560 2020 QSPR Models for Predicting Critical Micelle Concentration of Gemini Cationic Surfactants Combining Machine-Learning Methods and Molecular DescriptorsE Setiawan, M Mudasir, K Wijaya 2 2020 Similarity: Effect of Temperature and Catalyst to Feed Ratio on Production Biofuel from Fatty Acid of Palm Oil Industrial Sludge HydrocrackingH Hasanudin, M Faizal, M Said, K Wijaya, A Rachmat, MH Dahlan Turnitin Universitas Sriwijaya 2020 Similarity: Hydrocracking of oil Residue from Palm oil Milt Effluent to BiofuelH Hasanudin, A Said, M Faizal, K Wijaya, MH Dahlan Turnitin Universitas Sriwijaya 2020 Chemical modification of montmorillonite K10 and its catalytic activitySJ Sekewael, K Wijaya, T Triyono Asian J. Chem. 32 (3), 659 5 2020 Physico-chemical properties of nano ZrO2-pillared bentonite with nickel as supporting metalM Mirzan, A Syoufian, K Wijaya Nano Hybrids and Composites 30, 9-17 1 2020 Synthesis of Coconut Oil-based Sodium Methyl Ester Sulfonate for the Application of Enhanced Oil RecoveryKW Feda Virgin Alfauziah, Fairuz Jannah Mardhiyah, Asma Nadia J.Idn.Chem.Soc 3 (1), 68-72 1* 2020 Preparation of Calcium Oxide/Zeolite Nanocomposite and its Application to Improve the Quality of Patchouli OilLH KARNA WIJAYA, MAISARI UTAMI, AKHMAD SYOUFIAN Key Engineering Material 849 (-), 119-124 2 2020 Application of Quantitative Structure-Property Relationship (QSPR) Models for the Predictions of Critical Micelle Concentration of Gemini Imidazolium SurfactantsE Setiawan, K Wijaya IOP Conference Series: Materials Science and Engineering 742 (1), 012022 4 2020 Kinetic model of crude palm oil hydrocracking over Ni/Mo ZrO2–pillared bentonite catalystH Hasanudin, A Rachmat, M Said, K Wijaya Periodica Polytechnica Chemical Engineering 64 (2), 238-247 9 2020 Hubungan kuantitatif struktur elektronik dan aktivitas antitumor senyawa turunan amino pirimido isokuinolin kuinon dengan pendekatan regresi komponen utamaA Saputra, K Wijaya, I Tahir Chemistry Progress 6 (1) 3 2019 Computational Study of Hydroxy Chalcone Compound as Potential Chemosensor for Cyanide AnionF Perdana, R Armunanto, K Wijaya Prosiding CELSciTech 4, 39-42 2019 The Jahn-Teller effect in mixed aqueous solution: the solvation of Cu2+ in 18.6% aqueous ammonia obtained from ab initio quantum mechanical charge field molecular dynamicsWD Saputri, K Wijaya, HD Pranowo, TS Hofer Pure and Applied Chemistry 91 (10), 1553-1565 7 2019 Synthesis and characterization of Ni-promoted zirconia pillared bentoniteM Mirzan, K Wijaya, II Falah, W Trisunaryanti Journal of Physics: Conference Series 1242 (1), 012013 2019 Kinetics adsorption of heavy oil spills in rivers on magnetite-(CTAB-montmorillonite) adsorbentSH Siregar, K Wijaya, ES Kunarti, A Syoufian IOP Conference Series: Materials Science and Engineering 509 (1), 012136 2 2019 Studi Teoritis Senyawa Turunan Kalkon Hidroksi sebagai Chemosensor AnionF Perdana, K Wijaya, R Armunanto Indonesian Journal of Chemical Science 8 (1), 47-52 2019 Investigation of the preferential solvation and dynamical properties of Cu+ in 18.6% aqueous ammonia solution using ab initio quantum mechanical charge field (QMCF) molecular …WD Saputri, Y Hidayat, K Wijaya, HD Pranowo, TS Hofer Journal of Molecular Liquids 275, 859-866 8 2019 STRUKTUR SOLVASI DAN SIFAT DINAMIKA ION Cu+ DAN Cu2+ DALAM PELARUT AMONIA CAIR DAN LARUTAN AMONIA: SIMULASI DINAMIKA MOLEKUL AB INITIO QUANTUM MECHANICAL CHARGE FIELD (QMCF)WD SAPUTRI Universitas Gadjah Mada 2019 PREPARASI KOMPOSIT CaO/ZEOLIT DAN APLIKASINYA UNTUK MENINGKATKAN MUTU MINYAK NILAML Hidayatullah Universitas Gadjah Mada 2019 PLATINA/NANOZIRKONIA TERSULFATASI: PREPARASI, KARAKTERISASI DAN APLIKASINYA UNTUK KONVERSI LIMBAH PLASTIK LDPE MENJADI BAHAN BAKAR CAIRM UTAMI Universitas Gadjah Mada 2019 Hydrothermal preparation of a platinum-loaded sulphated nanozirconia catalyst for the effective conversion of waste low density polyethylene into gasoline-range hydrocarbonsM Utami, W Trisunaryanti, K Shida, M Tsushida, H Kawakita, K Ohto, … RSC advances 9 (71), 41392-41401 13 2019 Chrom/Nanocomposite ZrO2-Pillared Bentonite Catalyst for Castor Oil (Ricinus communis) HydrocrackingK Wijaya, A Syoufian, A Fitroturokhmah, W Trisunaryanti, D Adi Saputra Nano Hybrids and Composites 27, 31-37 4 2019 Hydrocracking of LDPE plastic waste into liquid fuel over sulfated zirconia from a commercial zirconia nanopowderL Hauli, K Wijaya, A Syoufian Orient. J. Chem 35 (1), 128-133 11 2019 Effect of promoters and calcination temperature on surface and acidity of modified zirconiaAK Amin, W Trisunaryanti, K Wijaya Journal of Nano Research 57, 31-39 4 2019 Preparation of Cr metal supported on sulfated zirconia catalystL Hauli, K Wijaya, RIA Armunanto Materials Science Forum 948, 221-227 3 2019 Pilarisasi dan Karakterisasi MontmorillonitY Istinia, K Wijaya, I Tahir, M Mudasir Jurnal Sains Materi Indonesia 4 (3), 1-7 2 2018 Pengaruh Pemanasan Terhadap Kristalinitas Dan Parameter Kisi Nanokomposit Silika-Zirkonia Montmorillonit K10 Dan Silika-Besi Oksida Montmorillonit K10SJ Sekewael, K Wijaya Indonesian Journal of Chemical Research 6 (1), 38-43 7 2018 Pt-promoted sulfated zirconia as catalyst for hydrocracking of LDPE plastic waste into liquid fuelsM Utami, K Wijaya, W Trisunaryanti Materials Chemistry and Physics 213, 548-555 39 2018 Synthesis of H/Bentonite and Ni/Al2O3-bentonite and its application to produce biogasoline from nyamplung seed (Calophyllum inophillum Linn) oil by catalytic hydrocrackingAT Marini, K Wijaya, NA Sasongko IOP Conference Series: Earth and Environmental Science 124 (1), 012009 1 2018 SINTESIS, KARAKTERISASI DAN UJI AKTIVITAS KATALIS Ni/ZrO2-SO4 PADA REAKSI HIDRORENGKAH MINYAK KELAPA MENJADI BIOFUELNJ PUTERI Universitas Gadjah Mada 2018 SINTESIS KATALIS Cr/ZrO2-SO4 SECARA HIDROTERMAL DAN APLIKASINYA UNTUK HIDRORENGKAH MINYAK SAWIT MENJADI BIOFUELR SAFITRI Universitas Gadjah Mada 2018 PREPARASI KATALIS Ni/BENTONIT DAN APLIKASINYA UNTUK HIDRORENGKAH MINYAK HASIL PIROLISIS PLASTIK LDPE (LOW DENSITY POLYETHYLENE)JA PUTRA Universitas Gadjah Mada 2018 Studi Teoritis Senyawa Turunan Kalkon Hidroksi Sebagai Sensor Kimia Berbagai AnionF Perdana, K Wijaya, R Armunanto Jurnal Kimia Riset 3 (2), 95-101 1 2018 Kalium Hydroxide/Zirconia Pillared Bentonite for Palm Oil TransesterificationY Utubira, K Wijaya, ES Kunarti Oriental Journal of Chemistry 34 (3), 1484 7 2018 The catalytic performance of ZrO2-SO4 and Ni/ZrO2-SO4 prepared from commercial ZrO2 in Hydrocracking of LDPE plastic waste into liquid fuelsAK Amin, K Wijaya, W Trisunaryanti Oriental Journal of Chemistry 34 (6), 3070 7 2018 Preparation and characterization of sulfated zirconia from a commercial zirconia nanopowderL Hauli, K Wijaya, R Armunanto Oriental Journal of Chemistry 34 (3), 1559 18 2018 Synthesis and Characterization of Natural Ca (OH) 2/KF Superbase Catalyst for Biodiesel Production from Palm OilIF Nurcahyo, K Wijaya, A Budiman, YH Taufiq-Yap Oriental Journal of Chemistry 34 (2), 750 2018 Synthesis and Characterization of Ni-Cu Doped Zirconia-pillared BentoniteA Suseno, K Wijaya, W Trisunaryanti Oriental Journal of Chemistry 34 (3), 1427 5 2018 Synthesis of Co, Mo, Co-Mo and Mo-Co catalysts, supported on mesoporous silica-alumina for hydrocracking of α-cellulose pyrolysis oilMF Marsuki, W Trisunaryanti, II Falah, K Wijaya Oriental Journal of Chemistry 34 (2), 955 10 2018 Synthesis and Characteristics of the Magnetic Properties of Fe3O4–(CTAB-montmorillonite) Composites, based on Variation in Fe3+/Fe2+ ConcentrationsSH Siregar, K Wijaya, ES Kunarti, A Syoufian Oriental Journal of Chemistry 34 (2), 716 4 2018 Synthesis of Cr/Al2O3-Bentonite Nanocomposite as the hydrocracking catalyst of Castor oilK Wijaya, AD Ariyanti, I Tahir, A Syoufian, A Rachmat Nano Hybrids and Composites 19, 46-54 4 2018 Investigation of the structural and dynamical properties of Cu+ in liquid ammonia: a quantum mechanical charge field (QMCF) molecular dynamics studyWD Saputri, K Wijaya, R Armunanto Indonesian Journal of Chemistry 17 (3), 531-537 6 2017 Viskositas Produk Hidrocracking Crude Oil Batubara Dengan Katalis Ni/Mo-Montmorillonit Terpilar TiO2H Hasanudin, K Wijaya, A Rahmad, W Trisunaryanti Jurnal Penelitian Sains 11 (2) 1 2017 Synthesis and characterization of sulfated zirconia mesopore and its application on lauric acid esterificationA Rachmat, W Trisunaryanti, K Wijaya Materials for Renewable and Sustainable Energy 6 (3), 1-9 20 2017 Material CuO/bentonit sebagai Antibakteri Escherichia coliRY FATMAWATI Universitas Gadjah Mada 2017 KATALIS HETEROGEN SO4/ZrO2 DAN Na2O/ZrO2: PREPARASI, KARAKTERISASI, DAN APLIKASINYA UNTUK KONVERSI LOW GRADE CRUDE PALM OIL MENJADI BIODIESELMF Lestari Universitas Gadjah Mada 2017 PERENGKAHAN KATALITIK TERHADAP MINYAK HASIL PIROLISIS PLASTIK LDPE (LOW DENSITY POLYETHYLENE) MENGGUNAKAN KATALIS Cr-ZEOLITM ANSHORI Universitas Gadjah Mada 2017 Sintesis dan Karakterisasi Surfaktan Dietanolamida dari Minyak Goreng Bekas Terkatalsis CaO/ZeolitW Lusiana Universitas Gadjah Mada 2017 SINTESIS SURFAKTAN NATRIUM METIL ESTER SULFONAT (Na-MES) DARI MINYAK KELAPA DENGAN OPTIMASI RASIO MOL DAN WAKTU SULFONASIA Syoufian Universitas Gadjah Mada 2017 Konversi Gliserol Menjadi Polihidroksibutirat dengan Menggunakan Bakteri Eschericia coliEF Rahayu, W Trisunaryanti, K Wijaya Indonesian Journal of Chemical Science 6 (3), 287-293 2 2017 Determination of effective functional monomer and solvent for R (+)-cathinone imprinted polymer using density functional theory and molecular dynamics simulation approachesA Saputra, K Wijaya, R Armunanto, L Tania, I Tahir Indonesian Journal of Chemistry 17 (3), 516-522 3 2017 Effect of sulfuric acid treatment and calcination on commercial zirconia nanopowderM Utami, K Wijaya, W Trisunaryanti Key Engineering Materials 757, 131-137 17 2017 Nanomaterial: Aplikasinya dalam Pembuatan BiofuelK Wijaya, K Hadi, AT Herlina, Idra, Kurnia Gadjah Mada University Press 1, 225 3 2016 PERAN RISET KIMIA PADA PENGEMBANGAN BAHAN BAKAR NABATI (BBN) DI INDONESIA BERBASIS NON EDIBLE BIOMASSK Wijaya PROSIDING SEMINAR KIMIA 2016 Effect of sulfuric acid concentration of bentonite and calcination time of pillared bentoniteA Mara, K Wijaya, W Trisunaryati, Mudasir AIP Conference Proceedings 1725 (1), 020042 1 2016 Modification of natural matrix lac-bagasse for matrix composite filmsND Nurhayati, K Widjaya, Triyono AIP Conference Proceedings 1710 (1), 030013 2016 SINTESIS KATALIS Cr-Al2O3-BENTONIT UNTUK PROSES HIDRORENGKAH MINYAK SAWITI Septiana Universitas Gadjah Mada 2016 MATERIAL Ag2O/BENTONIT SEBAGAI ANTIBAKTERI Escherichia coliITA AZIZ Universitas Gadjah Mada 2016 KATALIS Ni-Al2O3-BENTONIT UNTUK HIDRORENGKAH MINYAK SAWIT MENJADI BIOFUELRN ANNISA Universitas Gadjah Mada 2016 PEMODELAN MOLEKUL DAN SINTESIS POLIMER TERCETAK MOLEKUL KOLESTEROL DENGAN MONOMER FUNGSIONAL ASAM ITAKONATM Karna Wijaya Universitas Gadjah Mada 2016 Sintesis Dan Karakterisasi Fotokatalis Tio2 Montmorilonit Terpilar AluminaI Sumarlan, I Fatimah, K Wijaya Jurnal Pijar Mipa 11 (2) 1 2016 Microwave Assisted Preparation and Physico-Chemical Properties of Mixed Oxides Silica-Zirconia Montmorillonite K10 NanocompositeSJ Sekewael, K Wijaya, A Budiman Asian Journal of Chemistry 28 (10), 2325 5 2016 Study of the acidic properties of ZrO2-pillared bentoniteA Suseno, K Wijaya, W Trisunaryanti IOP Conference Series: Materials Science and Engineering 107 (1), 012040 1 2016 Removal of free fatty acid in Palm Fatty Acid Distillate using sulfonated carbon catalyst derived from biomass wastefor biodiesel productionA Hidayat, K Wijaya, A Budiman IOP Conference Series: Materials Science and Engineering 105 (1), 012026 7 2016 Chrome impregnated on Bentonite (Cr-Bentonite) as hydrocracking catalyst of used cooking oilR Mandey, K Wijaya, A Syoufian Asian Journal of Chemistry 28 (2), 282 4 2016 Effect of Sulfuric Acid Treatment and Calcination on Natural Zeolites of IndonesiaA Mara, K Wijaya, WT Mudasir Asian Journal of Chemistry 28 (1), 11 8 2016 Reaction kinetics of free fatty acids esterification in palm fatty acid distillate using coconut shell biochar sulfonated catalystA Hidayat, Rochmadi, K Wijaya, A Budiman AIP Conference Proceedings 1699 (1), 050005 15 2015 Anionic and cationic dyes removal from aqueous solutions by adsorption onto synthetic Mg/Al hydrotalcite-like compoundE Heraldy, SJ Santosa, T Triyono, K Wijaya Indonesian Journal of Chemistry 15 (3), 234-241 23 2015 Effect of Immersion in Cu (II)-Natural Zeolite on Copper Sorption and Colour Stability of Acrylic Resins.D Irnawati, W Widjijono, K Wijaya, W Asmara Asian Journal of Chemistry 27 (9) 2015 Esterification of palm fatty acid distillate with high amount of free fatty acids using coconut shell char based catalystA Hidayat, K Wijaya, A Nurdiawati, W Kurniawan, H Hinode, K Yoshikawa, … Energy Procedia 75, 969-974 59 2015 Synthesis and Characterization of ZrO2-Pillared Bentonites.A Suseno, K Wijaya, W Trisunaryanti, M Shidiq Asian Journal of Chemistry 27 (7) 14 2015 Synthesis and Application of Alumina Pillared Bentonite Catalyst for Esterification of Acetic Acid with Different Alcohols.P Wahyuningsih, K Wijaya, W Trisunaryanti, A Mara Asian Journal of Chemistry 27 (4) 2 2015 Microwave assisted preparation of TiO2/Al-pillared saponite for photocatalytic phenol photo-oxidation in aqueous solutionI Fatimah, K Wijaya Arabian Journal of Chemistry 8 (2), 228-232 19 2015 Lithium (I) in liquid ammonia: A quantum mechanical charge field (QMCF) molecular dynamics simulation studyN Prasetyo, LR Canaval, K Wijaya, R Armunanto Chemical Physics Letters 619, 158-162 20 2015 SINTESIS BIODIESEL DARI MINYAK GORENG BEKAS TERADIASI MICROWAVE DAN TERKATALISIS SO4/ZrO2 DAN Na2O/ZrO2NC Agustin Universitas Gadjah Mada 2015 Is FatimahSP Yudha, D Rubiyanto, K Wijaya, I Sahroni Universitas 2015 SINTESIS BIODIESEL DARI MINYAK GORENG BEKAS DENGAN BANTUAN GELOMBANG MIKRO TERKATALISIS SO4/ZrO2 DAN KOH/ZrO2SYE LASSI Universitas Gadjah Mada 2015 KONVERSI MINYAK KELAPA BEKAS MENJADI BIODIESEL TERKATALISIS H2SO4/BENTONIT DAN KOH/BENTONITTU Raharja Universitas Gadjah Mada 2015 Pembuatan dan Karakterisasi Kompon Karet Cair Berbasis Lateks Pekat dan Asap Cair Tempurung KelapaTD Sutanto, M DRS Universitas Gadjah Mada 2015 SINTESIS 1, 1-DIPENTOKSIPENTANA DARI 1-PENTANOL MENGGUNAKAN KATALIS Ni/KARBON AKTIFM Karna Wijaya, II Falah Universitas Gadjah Mada 2015 Esterification of free fatty acid on palm fatty acid distillate using activated carbon catalysts generated from coconut shellA Hidayat, K Wijaya, A Budiman Procedia Chemistry 16, 365-371 18 2015 Effect of KOH as Stabilizer on Mechanical and Chemical Properties of Liquid Rubber CompoundTD Sutanto, B Setiaji, K Wijaya, TE Suharto Asian Journal of Chemistry 26 (24), 8371 4 2014 Synthesis of Zn (II)/silica by sol-gel method as an antibacterial material against Escherichia coli and Staphylococcus aureusD Anggraini, K Wijaya BIMIPA 23 (2), 186-197 3 2014 Effect of pyrolisis temperature and distillation on character of coconut shell liquid smokeJZ Lombok, B Setiaji, W Trisunaryanti, K Wijaya Asian Journal of Science and Technology 5 (6), 320-325 43 2014 Computer Aided Design of Molecular Imprinted Polymer for Selective Recognition of CapsaicinI Tahir, K Wijaya, S Islam, MN Ahmad Indonesian Journal of Chemistry 14 (1), 85-93 2 2014 Identification of antibacterial compound from extract coconut shell liquid smokeJZ Lombok, B Setiaji, W Trisunaryanti, K Wijaya Research India Publications 10, 141-151 2014 Karakterisasi dan Aplikasi Katalis Nikel-Molibdenum Teremban pada Zeolit Alam Aktif untuk Hidrorengkah Tir BatubaraDJ Sugianto, K Wijaya, I Tahir Jurnal Natur Indonesia 16 (1), 10-22 4 2014 APLIKASI METODE DFT DAN SIMULASI DINAMIKA MOLEKULER PADA KAJIAN INTERAKSI MONOMER FUNGSIONAL UNTUK DESAIN POLIMER TERCETAK R (+)-KATINONA Saputra Universitas Gadjah Mada 1 2014 SINTESIS BIODIESEL DARI FRAKSI MINYAK CPO (CRUDE PALM OIL) PARIT MELALUI ESTERIFIKASI DAN TRANSESTERIFIKASI TERKATALISIS ZrO2/SO3-H+ DAN KOHI Herlina Universitas Gadjah Mada 2014 Sintesis Cu (II)/Silika dengan metode sol-gel sebagai antibakteri terhadap Escherichia coli dan Staphylococcus aureusL Tania, K Wijaya, W Trisunaryanti Bimipa 24 (2), 122-134 3 2014 Hydrocracking of used cooking oil into biofuel catalyzed by nickel-bentonite.K Wijaya, A Syoufian, SD Ariantika Asian Journal of Chemistry 26 (13), 3785-3789 10 2014 Synthesis of biogasoline from used palm cooking oil through catalytic hydrocracking by using Cr-activated natural zeolite as catalyst.K Wijaya, M Shidiq, M Fahrurrozi Asian Journal of Chemistry 26 (16), 5033-5038 1 2014 Synthesis, Characterization and Aplication of TiO2 Alumina Pillared Montmorillonite PhotocatalystI Sumarlan, I Fatimah, K Wijaya EKSAKTA: Journal of Sciences and Data Analysis 13 (1-2), 22-32 2013 Electrodeposition of PbO2 on Ti Substrate in Alkaline Solution: Influence of Fluoride Ions AdditionA Mukimin, K Wijaya, A Kuncaka Asian Journal of Chemistry 25, 3961-3965 1 2013 Peer Review Effect of Temperature and Catalyst to Feed Ratio on Production Biofuel from Fatty Acid of Palm Oil Industrial Sludge HydrocrackingM Said, M Faizal, MH Dahlan, K Wijaya, A Rachmat Fakultas Teknik Institute Teknologi Semarang 2013 Pembimbing Pendamping Disertasi_Perengkahan Hidro Lemak Hasil Recovery dari Sludge Limbah Industri CPO menjadi Bahan Bakar Minyak dengan Katalis Ni/Mo-Monmorilonit Terpilar ZrO2H Hasanudin, M Said, M Faizal, H Dahlan, K Wijaya Pascasarjana, Universitas Sriwijaya 2013 SINTESIS, KARAKTERISASI DAN APLIKASI ELEKTRODA Ti/PbO2 PADA ELEKTRODEGRADASI ZAT WARNA BIRU REAKTIFA MUKIMIN Universitas Gadjah Mada 2013 SINTESIS Zn (II)/SILIKA DENGAN METODE SOL-GEL SEBAGAI BAHAN ANTIBAKTERI Esherichia coli DAN Staphylococcus aureusD ANGGRAINI Universitas Gadjah Mada 2013 PENGGUNAAN KATALISATOR ZIRKONIA TERSULFATASI (SO4/ZrO2) dan KOH PADA PEMBUATAN BIODIESEL DARI MINYAK GORENG BEKASE Wulandari Universitas Gadjah Mada 2013 SINTESIS METIL ESTER MINYAK JARAK (Ricinus communis L) TERKATALISIS KOH/BENTONIT DENGAN VARIASI PENAMBAHAN KOHN Puspitasari Universitas Gadjah Mada 2013 Comparison of activated carbons prepared from Indonesian forest and agricultural residues.A Hidayat, K Wijaya, H Hinode, A Budiman Asian Journal of Chemistry 25 (3), 1569-1575 19 2013 PENGARUH PERLAKUAN TEMPERATUR PADA SINTESIS BENTONIT TERPILAR Al2O3 TERHADAP KARAKTERNYA DAN APLIKASINYA SEBAGAI KATALIS DALAM REAKSI ESTERIFIKASI; The Effect of Temperature …P Wahyuningsih Universitas Gadjah Mada 1 2013 Hydrocracking of palm oil into biogasoline catalyzed by Cr/natural zeolite.K Wijaya, G Baobalabuana, W Trisunaryanti, A Syoufian Asian Journal of Chemistry 25 (16), 8981-8986 13 2013 Penggunaan metode semiempirik AM1 untuk pemilihan monomer fungsional efektif pada prasintesis polimer tercetak diazinonA Saputra, K Wijaya, MN Ahmad, I Tahir Jurnal Kimia Valensi 3 (1) 6 2013 Hydrocracking of oil residue from palm oil mill effluent to biofuelM Said, M Faizal, MH Dahlan, K Wijaya Sustain. Environ. Res. 22 (6), 395-400 3 2012 Website: http://www. ijc. chemistry. ugm. ac. id Email: ijcugm@ yahoo. com Vice Editor in ChiefK Wijaya, M Eng, MS Nuryono, R Armunanto, TJ Raharjo, NH Aprilita, … INDONESIAN JOURNAL OF CHEMISTRY 12 (3) 2012 Oxidation of remazol brilliant blue r (RB. 19) with in situ electro-generated active chlorine using Ti/PbO2 electrodeA Mukimin, K Wijaya, A Kuncaka Separation and purification technology 95, 1-9 42 2012 JURNAL DIALOG KEBIJAKAN PUBLIK” Menyoal Kebijakan Pengendalian Subsidi BBM”K Publik 2012 STUDI PENDAHULUAN PEMANFAATAN LIMBAH DESALINASI UNTUK PEMBUATAN Mg/Al HYDROTALCITE-LIKE SEBAGAI ADSORBEN METHYL ORANGEE Heraldy, D Prasasti, K Wijaya, SJ Santosa, T Triyono Bumi Lestari Journal of Environment 12 (1), 16-23 2 2012 Preliminary study on the use of desalination waste for the manufacture of Mg/Al hydrotalcite-like methyl orange as an adsorbent.E Heraldy, D Prasasti, K Wijaya, SJ Santosa Bumi Lestari 12 (1), 16-23 2012 Karakterisasi dan Uji Aktivitas Katalis Mordenit dan Zeolit-Y Pada Hidrorengkah Ban Bekas menjadi Fraksi Bahan BakarW Trisunaryanti, KW Triyono, AB Majid, Y Priastomo, E Febriyanti, … Prosiding Seminar Nasional Kimia Unesa 1 2012 Biofuel di Indonesia: Prospek, Perspektif dan Strategi PengembangannyaK Wijaya Yogyakarta: Universitas Gadjah Mada 7 2012 Hydrocracking of Oil Residue from Palm Oil Mill Effluent to Biofuel, SustainSM Hasanudin, M Faizal, MH Dahlan, K Wijaya Environ. Res 22 (6), 395-400 11 2012 Synthesis of Mg/Al Hydrotalcite-Like from Brine Water and Its Application for Methyl Orange Removal: A Preliminary StudyE Heraldy, SJ Santosa, K Wijaya Makara Journal of Science 11 2011 Mg/Al hydrotalcite-like synthesized from brine water for eosin yellow removalE Heraldy, T Triyono, K Wijaya, SJ Santosa Indonesian Journal of Chemistry 11 (2), 117-123 5 2011 Synthesis and characterization of modified Ti/[alpha]-Pb [O. sub. 2] nanoporous electrode as an active material on positive electrodeA Mukimin, K Wijaya, A Kuncaka International Journal of Applied Chemistry 7 (3), 245-259 1 2011 Effect of Aluminium Content in Aluminium Pillared Montmorillonite on Its Surface Acidity Properties.I Fatimah, K Wijaya ITB Journal of Science 18 2011 Bioetanol skala UMKM dan home industryK Wijaya Pusat Studi Energi UGM, Yogyakarta 4 2011 Biodiesel Dari Minyak Goreng BekasK Wijaya Diakses dari http://www. pse. ugm. ac. id 7 2011 HIDRORENGKAH KATALITIK MINYAK SAWIT MENJADI FRAKSI BIOFUEL CAIR MENGGUNAKAN KATALIS Cr/ZEOLIT ALAM AKTIFGB Balabuana Universitas Gadjah Mada 2011 PEMBERDAYAAN MASYARAKAT MENUJU DESAMANDIRI ENERGI MELALUI PENGOLAHAN SAMPAH BUAH JAMBU METE DAN UMBI-UMBIAN MENJADI BIOETANOL DI DESA KARANGMOJO, KECAMATAN KARANGMOJO …K Wijaya JURNAL ILMU PENGETAHUANDAN TEKNOLOGI TEPATGUNA UNIVERSITAS GADJAH MA 1 (2011) 2011 Electro-degradation of reactive blue dyes using cylinder modified electrode: Ti/β-PbO 2 as dimensionally stable anodeA Mukimin, K Wijaya, A Kuncaka Indonesian Journal of Chemistry 10 (3), 285-289 8 2010 Composites of TiO2-aluminum pillared montmorillonite: synthesis, characterization and photocatalytic degradation of methylene blueI Fatimah, S Wang, K Wijaya Applied clay science 50 (4), 588-593 48 2010 PEMANFAATAN KATALIS NI/ZEOLIT PADA HIDROGENASI KATALITIK ETIL PALMITAT MENJADI SETIL ALKOHOLD Kartika, T Triyono, K Wijaya, DSPHDS PH Molekul 5 (2), 83-88 2 2010 EFFECT OF SCANDIUM ON HIDROGEN DISSOCIATION ENERGY AT MAGNESIUM SURFACE: AB INITIO DFT STUDYIW Sutapa, R Armunanto, K Wijaya Indonesian Journal of Chemistry 10 (2), 184-188 3 2010 Controlling Factor In Alumina Pillared Saponite and Alumina Pillared Montmorillonite SynthesisI Fatimah, N Narsito, K Wijaya Indonesian Journal of Chemistry 9 (1), 5-12 1 2010 Titanium oxide dispersed on natural zeolite (TiO 2/Zeolite) and its application for congo red photodegradationI Fatimah, E Sugiharto, K Wijaya, I Tahir, K Kamalia Indonesian Journal of Chemistry 6 (1), 38-42 41 2010 PHOTODEGRADATION OF ALIZARIN S DYE USING TiO 2-ZEOLITE AND UV RADIATIONK Wijaya, E Sugiharto, I Fatimah, I Tahir, R Rudatiningsih Indonesian Journal of Chemistry 6 (1), 32-37 10* 2010 Synthesis Of Iron Oxide-Montmorillonite Composite And Study Of Its Structural Stability Againts Sulfuric AcidK Wijaya, E Sugiharto, M Mudasir, I Tahir, I Liawati Indonesian Journal of Chemistry 4 (1), 33-42 9 2010 THE INTERACTION OF Co 2+-AMMONIA MODELLING: THE COMPARATIVE STUDY BETWEEN AB INITIO AND ELECTRON CORRELATION METHODSHD Pranowo, F Foliatini, K Wijaya Indonesian Journal of Chemistry 2 (2), 67-73 2010 QSAR study of flavone/flavonol analogues as the antiradical compounds based on Hansch analysisI Tahir, K Wijaya, B Purwono, D Widianingsih Indonesian Journal of Chemistry 3 (1), 48-54 8 2010 MODELING OF ALKYL SALICYLATE COMPOUNDS AS UV ABSORBER BASED ON ELECTRONIC TRANSITION BY USING SEMIEMPIRICAL QUANTUM MECHANICS ZINDO/s CALCULATIONI Tahir, K Wijaya, T Subarni Indonesian Journal of Chemistry 2 (1), 64-72 2 2010 DETERMINATION OF MANY-BODY EFFECT OF [Co (NH 3) n] 2+(n= 1-6) COMPLEXES BASE ON AB INITIO CALCULATIONSHD Pranowo, K Wijaya, B Setiaji, RS Janu Indonesian Journal of Chemistry 2 (1), 1-7 1 2010 Nanomaterial Berlapis dan Berpori : Sintesis, Karakterisasi, dan Peranannya sebagai Material Multifungsi (Pidato Pengukuhan Guru Besar UGM)K Wijaya 2010 Nanomaterial berlapis dan berpori: sintesis, karakterisasi dan perannya sebagai material multi fungsiK Wijaya Universitas Gajah Mada, Fakultas Matematika dan Ilmu Pengetahuan Alam … 10 2010 PREPARATION OF ZIRCONIUM DISPERSED IN ALUMINIUM PILLARED MONTMORILLONITE AND ITS ACTIVITY IN PHENOL HYDROXYLATIONIS FATIMAH, NARSITO, K WIJAYA Chemical, Biological And Environmental Engineering, 133-137 2010 HYDROTALCITE-LIKE SYNTHESIS USING MAGNESIUM FROM BRINE WATERE HERALDY, TRIYONO, SRIJ SANTOSA, K WIJAYA, D PRASASTI, … Chemical, Biological And Environmental Engineering, 246-248 2010 Asam Padat Berbasis Montmorilonit sebagai Katalis dalam Proses Pembuatan Biodiesel dari Minyak JelantahK Wijaya Advanced Material Workshop I 6 2009 Konversi lemak ayam menjadi biodiesel dengan katalis zeolit alam teraktivasi H2SO4 dan NaOHK HADI Universitas Gadjah Mada 1 2009 Preparation and catalytic activity for isopropyl benzene cracking of Co, Mo and Co/Mo-Al 2 O 3-pillared montmorillonite catalystsH Hasanudin, K Wijaya, B Santoso Indonesian Journal of Chemistry 9 (2), 189-194 2 2009 TiO2 dispersion in aluminium pillared clays by different precursorsI Fatimah, S Wang, N Narsito, K Wijaya Naresuan University Science Journal 6 (S1), 132-138 2009 Photocatalytic degradation of methylene blue by TiO2/Aluminium pillared montmorillonite under UV illuminationI Fatimah, K Wijaya, N Narsito, S Wang Proceeding of ISSTEC 2009, 1349-1353 2009 Preparation of TiO2/Aluminium Pillared Montmorillonite and its Application for Methylene Blue Photodegradation under UV IlluminationI Fatimah, K Wijaya, N Narsito, S Wang World journal of Chemistry 4, 21-26 9 2009 Prediksi Tipe Aktivitas Senyawa Tabir Surya Homosalat Berdasarkan Analisis Spektra Transisi Elektronik Pada Konfigurasi Bentuk Dimer dan Solut-SolvenI Tahir, K Wijaya, A Ahmadi Seminar Nasional Kimia XVIII, Yogyakarta 10 3 2008 CONTROLLINGFACTORIN ALUMINA PilLARED SAPONITEAND ALUMINA PilLARED MONTMORillONITE SYNTHESISI Fatlmah, KW Narsito Indonesian Journal of Chemistry 9 (2009) 2008 Preparasi dan Karakterisasi Komposit Kromium Oksida-MontmorillonitIMS Negara, K Wijaya, E Sugiharto Jurnal Kimia 2 (2), 93 1 2008 A comparative study on aluminium pillared smectite synthesis from synthetic saponite and Indonesian montmorilloniteI Fatimah, S Wang, K Wijaya ASEAN Journal of Chemical Engineering 8 (1 & 2), 70-78 7 2008 Synthesis ZrO2-montmorillonite and application as catalyst in catalytic cracking of heavy fraction of crude oilI Fatimah, K Wijaya, KH Setyawan Bulletin of Chemical Reaction Engineering & Catalysis 3 (1-3), 9 15 2008 Analisis Spektra Transisi Elektronik Senyawa Tabir Surya MAA’S-GLY pada Konfigurasi Dimer dan Konfigurasi Solut-EtanolI Tahir, K Wijaya, A Ahmadi BIMIPA 17 (2), 23-32 3 2007 Pemodelan Molekul Senyawa Berpotensi Sunscreen Berbasis Struktur Molekul Mycosporine-Like Amino Acids-GlycineI Tahir, K Wijaya, R Damayanti Austrian Indonesian Centre for Computational Chemistry (AIC), FMIPA … 1 2007 Effect of palm empty bunch ash on transesterification of palm oil into biodieselJ Sibarani, S Khairi, Y Yoeswono, K Wijaya, I Tahir Indonesian Journal of Chemistry 7 (3), 314-319 22 2007 Base-specific and enantioselective studies for the DNA binding of iron (II) mixed-ligand complexes containing 1, 10-phenanthroline and dipyrido [3, 2-a: 2′, 3′-c] phenazineK Wijaya, ET Wahyuni, H Inoue, N Yoshioka Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 66 (1 … 42 2007 Preparation and Characterization of Tio 2-Zeolite and its Application to Degrade Textille Wastewater by Photocatalytic MethodY Utubira, K Wijaya, T Triyono, E Sugiharto Indonesian Journal of Chemistry 6 (3), 231-237 22 2006 Salt-dependent binding of iron (II) mixed-ligand complexes containing 1, 10-phenanthroline and dipyrido [3, 2-a: 2′, 3′-c] phenazine to calf thymus DNAK Wijaya, ET Wahyuni, N Yoshioka, H Inoue Biophysical chemistry 121 (1), 44-50 20 2006 Utilisasi TiO2-zeolit dan sinar uv untuk fotodegradasi zat warna congo redK Wijaya, E Sugiharto, I Fatimah, S Sudiono, D Kurniaysih Teknoin 11 (3) 80 2006 Zeolit termodifikasi TiO2 dan aplikasinya sebagai fotokatalis untuk menurunkan angka COD limbah cair industri tekstilM MIRZAN Universitas Gadjah Mada 2006 Modifikasi zeolit alam dengan TiO2 dan aplikasinya sebagai fotokatalis dalam reaksi degradasi untuk menurunkan angka COD limbah cair industri tekstilY UTUBIRA Universitas Gadjah Mada 2006 Kamalia, 2006, Titan Dioksida Terdispersi Pada Zeolit Alam (TiO 2/Zeolit) dan Aplikasinya untuk Fotodegradasi Congo Red, IndoI Fatimah, E Sugiharto, K Wijaya, I Tahir Indonesian Journal of Chemistry 69 (1), 38-42 11 2006 Pengaruh Metode Preparasi Terhadap Karakter Fisikokimiawi Montmorillonit Termodifikasi ZrO2I Fatimah, K Wijaya Akta Kimindo 1 (2), 87-92 10 2006 Pengaruh Konsentrasi Logam Ti terhadap Karakter Fisikokimiawi TiO₂-Zeolit dan Pemanfaatan TiO₂-Zeolit untuk Fotodegradasi Metilen BiruI Fatimah, K Wijaya Universitas Islam Indonesia 2005 Preparasi komposit Krom Oksida-Montmorillonit dan aplikasinya untuk sorpsi BenzenaI NEGARA Universitas Gadjah Mada 8 2005 Sintesis Fe2O3-Monmorillonite dan Aplikasinya sebagai Fotokatalis untuk Degradasi Zat Pewarna Congo RedK Wijaya, I Tahir, N Haryanti Indonesian Journal of Chemistry 5 (1), 41-47 8 2005 Synthesis Of Fe 2 O 3-Montmorillonite And Its Application As A Photocatalyst For Degradation Of Congo Red DyeK Wijaya, I Tahir, N Haryanti Indonesian Journal of Chemistry 5 (1), 41-47 8 2005 Fotodegradasi Zat Warna Methyl Orange Menggunakan Fe2O3-Montmorillonit dan Sinar UltravioletY Dhamayanti, K Wijaya, I Tahir Proseding Seminar Nasional DIES ke 50 FMIPA UGM, 22-29 11 2005 Sintesis TiO2/zeolit sebagai fotokatalis pada pengolahan limbah cair industri tapioka secara adsorpsi-fotodegradasiI Fatimah, K Wijaya Teknoin 10 (4) 66 2005 Pemodelan Molekul Senyawa Mycosporine-Like Amino Acids (MAAs-LIKE) sebagai Senyawa Penyerap Sinar UVI Tahir, K Wijaya, II Falah, R Damayanti Prosiding Seminar Nasional Hasil Penelitian MIPA, Fakultas MIPA Universitas … 3 2004 Polysulfonylamine, CLXX [1]. Wasserstoffbrücken in kristallinen Onium-dimesylamiden: Drei Strukturen mit NH2-substituierten 1, 3, 5-Triazinium-Kationen (einschließlich …K Wijaya, O Moers, D Henschel, A Blaschette, PG Jones Zeitschrift für Naturforschung B 59 (7), 747-756 9 2004 DNA-Binding Properties of Iron (II) Mixed-Ligand Complexes Containing 1, 10-Phenanthroline and Dipyrido [3, 2-a: 2’, 3’-c] phenazineK Wijaya, DH Tjahjono, N Yoshioka, H Inoue Zeitschrift für Naturforschung B 59 (3), 310-318 14 2004 Original Communications-Polysulfonylamines, CLXX. Hydrogen Bonding in Crystalline Onium Dimesylamides: Three Structures Involving NH2-Substituted 1, 3, 5-Triazinium Cations …K Wijaya, O Moers, D Henschel, A Blaschette, PG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 59 (7), 747-756 2004 Original Communications-Polysulfonylamines, CLXVII. Hydrogen Bonding in Crystalline Onium Dimesylamides: A Robust Three-Point Pattern Integrated into a 2D, a Two-fold …K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 59 (1), 17-26 2004 Preparasi komposit besi oksida-Montmorilonit dan aplikasinya sebagai adsorben senyawa benzenaSJ SEKEWAEL Universitas Gadjah Mada 1 2004 Sintesis lempung montmorillonit terpilar Fe2O3 dan kajian sifat-sfat kimia fisiknya= Synthesis of Fe2O3 pillared montmorillonite clay and study of its physico-chemical propertiesIAG Widihati, K Wijaya, MU Yahya Sains dan Sibernatika 17 (2004) 2004 Interaction of Iron (II) Mixed-Ligand Complexes With DNA: Base-Pair Specificity and Thermal denaturation StudiesM Mudasir, K Wijaya, ET Wahyuni, H Inoue Indonesian Journal of Chemistry 4 (3), 174-179 3 2004 Polysulfonylamine, CLXVII [1]. Wasserstoffbrücken in kristallinen Onium-dimesylamiden: Ein robustes Dreipunktmuster als Bestandteil eines 2D-, eines zweifach verwobenen 2D-und …K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 59 (1), 17-26 1 2004 Polysulfonylamines, CLXX. Hydrogen Bonding in Crystalline Onium Dimesylamides: Three Structures Involving NH~ 2-Substituted 1, 3, 5-Triazinium Cations (Including Melaminium)(In …K Wijaya, O Moers, D Henschel, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 1 (7), 747-756 2004 Aplikasi Pemisahan Data Secara Acak pada Analisis Hubungan Kuantitatif Struktur Elektronik dan Aktivitas Senyawa IndolialkilaminaI Tahir, K Wijaya, ESY Putri Seminar Nasional Hasil Penelitian Farmasi, 190-200 2 2004 Analisis In Silico Senyawa Tabir Surya Alkil Sinamat Berdasarkan Perhitungan Transisi Elektronik dengan Metoda ZINDO/sI Tahir, K Wijaya, T Subarni, TD Wahyuningsih Jurnal Farmasi Sains dan Komunitas, II (3), 230-240 3 2004 Polysulfonylamines, CLXVII. Hydrogen Bonding in Crystalline Onium Dimesylamides: A Robust Three-Point Pattern Integrated into a 2D, a Two-fold Interwoven 2D, or a 3D Hydrogen …K Wijaya, O Moers, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 59 (1), 17-26 6 2004 DNA binding of iron (II) complexes with 1, 10-phenanthroline and 4, 7-diphenyl-1, 10-phenanthroline: salt effect, ligand substituent effect, base pair specificity and binding …K Wijaya, N Yoshioka, H Inoue Journal of inorganic biochemistry 94 (3), 263-271 59 2003 SINTESIS KATALIS MESOPORI LEMPUNG TERPILAR SOL SILIKA BERPENGEMBAN Ni, Zr DAN TI DARI LEMPUNG ALAM BOYOLALI UNTUK HIDRORENGKAH FRAKSI BERAT MINYAK BUMI MINASA Darmawan, S SRIATUN, Y ARRYANTO, K WIJAYA UNIVERSITAS DIPONEGORO 2 2003 Terapan Analisis Hansch Untuk Aktivitas Antioksidan Senyawa Turunan FlavonI Tahir, K Wijaya, D Wdianingsih, B Purwono Flavonol. Jogjakarta. Makalah Seminar Khemometri. Jurusan Kimia FMIPA UGM 10 2003 SINTESIS PILLARED-BENTONITE DAN APLIKASINYA UNTUK PHOTO-FUNCTIONAL MATERIALSK Wijaya text 2003 PEMBUATAN KOMPLEKS MIXED-LIGAND BESI (II) SEBAGAI SENYAWA INTERKALATOR DNAKW Mudasir, DH Tjahjono Lembaga Penelitian UGM 2003 Terapan analisis hansch untuk aktivitas antioksidan senyawa turunan flavon/flavonolI Tahir, K Wijaya, D Widianingsih Makalah Seminar Khemometri 25 33 2003 Seminar on Chemometrics-Chemistry Dept Gadjah Mada UniversityI Tahir, K Wijaya, D Widianingsih Terapan Analisis Hansch Untuk Aktivitas Antioksidan senyawa Turunan Flavon … 11 2003 STUDY OF DOUBLE PROTONS MIGRATION MECHANISM IN SUPRAMOLECULAR STRUCTURES OF ACETIC ACID-WATER AND ACETIC ACID-AMMONIA BY AB INITIO METHODK Wijaya, I Tahir, H Harnowo Indonesian Journal of Chemistry 3 (2), 102-110 2 2003 Hubungan kuantitatif struktur-aktivitas antiradikal senyawa turunan flavon/flavonol berdasarkan pendekatan Free-WilsonI Tahir, K Wijaya, D Widianingsih Pros. Semin. Nas. Kim. Fis. III 5 2003 Polysulfonylamine, CLXI. Ein neuartiges 1, 2-Dihydroimidazochinolinylium-Kation: Zufällige Isolierung und Kristallstruktur des entsprechenden Dimesylamids Polysulfonylamines …K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 57 (11), 1277-1281 1 2002 Polysulfonylamine, CLIX [1]. Eine Vielfalt supramolekularer Synthone in zwei Molekülkomplexen von Di (4-halogenbenzolsulfonyl) aminen mit Sauerstoffbasen/Polysulfonylamines …T Hamann, K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 57 (10), 1152-1164 2002 Polysulfonylamine, CLIII [1]. Schwache Wasserstoffbrücken mit aktivierten Methyldonoren: Kristallstrukturen von Cholinium-, Betainium-und Dimethyl [2-(dimethylamino) ethyl …D Henschel, O Moers, K Wijaya, A Wirth, A Blaschette, PG Jones Zeitschrift für Naturforschung B 57 (5), 534-546 2002 Polysulfonylamine, CLI [1]. Starke und schwache Wasserstoffbrücken in den Kristallstrukturen von 8-Hydroxychinolinium-und 8-Aminochinolinium-dimesylamid/Polysulfonylamines, CLI …D Henschel, O Moers, K Wijaya, A Blaschette, PG Jones Zeitschrift für Naturforschung B 57 (5), 524-533 1 2002 Sintesis lempung terpilar Cr2O3 dan pemanfaatannya sebagai inang senyawa p-nitroanalinK Wijaya, I Tahir, A Bakuni Indonesia Jurnal of Chemistry 2 (1), 12-21 4 2002 Sintesis lempung Montmorillonit terpilar Fe2O3 dan kajian sifat-sifat fisiknyaIAG Widihati Universitas Gadjah Mada 2 2002 Analisis regresi linear multivariabel:: Hubungan kuantitatif struktur molekul dan sifat fisika (Titik didih, titik leleh dan kerapatan) berbagai senyawa organikM YAPIN Universitas Gadjah Mada 2002 Studi Kestabilan Termal dan Asam Lempung BentonitK Wijaya, SA Pratiwi, S Sudiono, E Nurahmi Journal of Chemistry 2 (1), 22-29 14* 2002 Hubungan Kuantitatif Antar Struktur Molekul dan Titik Leleh dari Berbagai Senyawa OrganikI Tahir, K Wijaya, MU Yahya Indonesia Journal of Chemistry 2 (2), 83-90 3 2002 Multifunction of Layered And Porous MaterialsK Wijaya Indonesian Journal of Chemistry 2 (3), 142-154 4 2002 Polysulfonylamines, CLXI. A Novel 1, 2-Dihydroimidazoquinolinylium Cation: Serendipitous Isolation and Crystal Structure of the Corresponding Dimesylamide (In German)K Wijaya, O Moers, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 57 (11), 1277-1281 2002 Determination Of Many-Body Effect Of [Co (NF13) â] 2*(n= 1-6)= Penentuan Pengaruh Badan-Banyak Pada Kompleks [Co (NH,), J2*(n= 1-6) Berdasarkan Perhitungan Ab InitioHD Pranowo, K Wijaya, B Setiaji, RS Janu Indonesian Journal of Chemistry 2 (2002) 2002 Quantitative Relationships Between Molecular Structure and Melting Point Of Several Organic CompoundsI Tahir, K Wijaya, MU Yahya, M Yapin Indonesian Journal of Chemistry 2 (2), 83-90 1 2002 A ROBUST EIGHT–MEMBERED RING MOTIF IN THE HYDROGEN-BONDED STRUCTURE OF-(PHENYLAMINO) PYRIDINIUM-DI (METHANESULFONYL) AMIDATEK Wijaya, I Tahir, A Blaschette, O Mours, PG Jones Indonesian Journal of Chemistry 2 (1), 73-78 2002 Polysulfonylamine, CLIX [1]. A Variety of Supramolecular Synthons in Two Molecular Complexes of Di (4-halobenzenesulfonyl) amines with Oxygen BasesT Hamann, K Wijaya, O Moers, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 57 (10), 1152-1164 4 2002 Polysulfonylamines, CLI. Strong and Weak Hydrogen Bonding in the Crystal Structures of 8-Hydroxyquinolinium and 8-Aminoquinolinium DimesylamideD Henschel, O Moers, K Wijaya, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 57 (5), 524-533 2 2002 Polysulfonylamines, CLIII. Weak Hydrogen Bonding with Activated Methyl Donors: Crystal Structures of Cholinium, Betainium and Dimethyl [2-(dimethylamino) ethyl] ammonium …D Henschel, O Moers, K Wijaya, A Wirth, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 57 (5), 534-546 10 2002 THE SYNTHESIS OF Cr 2 O 3-PILLARED MONTMORILLONITE (CrPM) AND ITS USAGE FOR HOST MATERIAL OF p-NITROANILINEK Wijaya, I Tahir, A Baikuni Indonesian Journal of Chemistry 2 (1), 12-21 15 2002 Multifunction Of Layered And Porous Materials= Bahan Berlapis dan Berpori Sebagai Bahan MultifungsiK Wijaya Indonesian Journal of Chemistry 2 (2002) 4 2002 Fotodegradasi Metilen Biru Menggunakan Katalis TiO2-Montmorilonit dan Sinar UVIK Sumerta, K Wijaya, I Tahir Paper dipresentasikan pada Seminar Nasional Pendidikan Kimia, Yogyakarta … 11 2002 Polysulfonylamine, CXLII [1]. Ein supramolekulares Monomer-Dimer-Paar: Starke und schwache Wasserstoffbrücken in den Kristallstrukturen von Pyridinium-dimesylamid und 4, 4 …O Moers, I Lange, K Wijaya, A Blaschette, PG Jones Zeitschrift für Naturforschung B 56 (10), 1041-1051 2001 Polysulfonylamine, CXLIII [1], Rolle schwacher Wasserstoffbrücken (C-H··· O) in den Kristallstrukturen von 2, 6-Dimethylpyridinium-, 1-Hydroxypyridinium-und Imidazolium …O Moers, K Wijaya, T Hamann, A Blaschette, PG Jones Zeitschrift für Naturforschung B 56 (10), 1052-1062 2001 Polysulfonylamines. CXXXII.K Wijaya, O Moers, PG Jones, A Blaschette Acta Crystallographica Section C: Crystal Structure Communications 57 (2 … 8 2001 Original Communications-Polysulfonylamines, CXLII. A Supramolecular Monomer-Dimer Pair: Strong and Weak Hydrogen Bonding in the Crystal Structures of Pyridinium Dimesylamide andO Moers, I Lange, K Wijaya, A Blaschette, PG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 56 (10), 1041-1051 2001 Original Communications-Polysulfonylamines, CXLIII. Role of Weak Hydrogen Bonds (CH… O) in the Crystal Structures of 2, 6-Dimethylpyridinium, 1-Hydroxypyridinium and …O Moers, K Wijaya, T Hamann, A Blaschette, PG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 56 (10), 1052-1062 2001 Preparasi dan karakterisasi lempung montmorillonit teraktivasi asam terpilar TiO2IN SIMPEN Universitas Gadjah Mada 15 2001 Polysulfonylamines, CXLII. A supramolecular monomer-dimer pair: Strong and weak hydrogen bonding in the crystal structures of pyridinium dimesylamide and 4, 4′-bipyridinediium …O Moers, I Lange, K Wijaya, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 56 (10), 1041-1051 5 2001 Polysulfonylamines, CXLIII. Role of Weak Hydrogen Bonds (CH… O) in the Crystal Structures of 2, 6-Dimethylpyridinium, 1-Hydroxypyridinium and Imidazolium DimesylamideO Moers, K Wijaya, T Hamann, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 56 (10), 1052-1062 6 2001 Polysulfonylamines, CXXVII-Hydrogen bonding in crystalline onium dimesylamides: A robust eight-membered ring synthon as a component in three-dimensional hydrogen bonding patternsK Wijaya, O Moers, D Henschel, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG SECTION BA JOURNAL OF CHEMICAL SCIENCES 55 (8 … 2 2000 Polysulfonylamine, CXXVII [1] Wasserstoffbrücken in kristallinen Onium-dimesylamiden: Ein robustes Achtring-Synthon als Bestandteil dreidimensionaler Wasserstoffbrückenmuster …K Wijaya, O Moers, D Henschel, A Blaschette, PG Jones Zeitschrift für Naturforschung B 55 (8), 753-762 4 2000 Polysulfonylamine, CXXVI [1] Wasserstoffbrücken in kristallinen Onium-dimesylamiden: Ein robustes Achtring-Synthon in Koexistenz mit einem dritten Wasserstoffbrückenmotiv …O Moers, K Wijaya, I Lange, A Blaschette, PG Jones Zeitschrift für Naturforschung B 55 (8), 738-752 2000 Polysulfonylamines, CXXVI-Hydrogen bonding in crystalline onium dimesylamides: A robust eight-membered ring synthon in coexistence with a third hydrogen bonding motif …O Moers, K Wijaya, I Lange, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG SECTION BA JOURNAL OF CHEMICAL SCIENCES 55 (8 … 8 2000 Polysulfonylamine, CXXV [1]. Neue Komplexe von Disulfonylaminen mit Kronenethern-im voraus entworfen oder zufällig entdeckt/Polysulfonylamines, CXXV [1]. New Complexes of …D Henschel, K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 55 (3-4), 299-316 2000 Polysulfonylamines, CXXV. New complexes of disulfonylamines with crown ethers-Preconceived or discovered by serendipityD Henschel, K Wijaya, O Moers, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG SECTION BA JOURNAL OF CHEMICAL SCIENCES 55 (3 … 2 2000 Sintesis Lempung Monmorilonit Terpilar Berbahan Baku Bentonit Alam Indonesia dan Aplikasinya Sebagai Katalis, Bahan Foto-Fungsional dan AdsorbenK Wijaya Universitas Gadjah Mada, Yogyakarta 2 2000 Original Communications-Polysulfonylamines, CXXVII. Hydrogen Bonding in Crystalline Onium Dimesylamides: A Robust Eight-Membered Ring Synthon as a Component in Three …K Wijaya, O Moers, D Henschel, A Blaschette, PG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 55 (8), 753-762 2000 Lempung Terpilar (Pillared Clay) sebagai Material MultigunaK Wijaya Jurnal Ilmu Kimia, FMIPA UIII, Yogyakarta 1, 1-10 9 2000 Original Communications-Polysulfonylamines, CXXVI. Hydrogen Bonding in Crystalline Onium Dimesylamides: A Robust Eight-Membered Ring Synthon in Coexistence with a Third …O Moers, K Wijaya, I Lange, A Blaschette, PG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 55 (8), 738-752 2000 Original Communications-Polysulfonylamines, CXXV. New Complexes of Disulfonylamines with Crown Ethers-Preconceived or Discovered by Serendipity (In German)D Henschel, K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 55 (3-4), 299-316 2000 Polysulfonylamine, CXIX Wasserstoffbrücken in kristallinen Onium-dimesylamiden: Ein antidromes Achtringmuster als robustes supramolekulares Synthon-Drei prototypische …K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 54 (11), 1441-1449 5 1999 Polysulfonylamine, CXVIII Wasserstoffbrücken in kristallinen Onium-dimesylamiden: Drei prim.-Ammonium-dimesylamide mit zwei-oder dreidimensionalen Wasserstoffbrückenmustern …D Henschel, O Moers, K Wijaya, A Blaschette, PG Jones Zeitschrift für Naturforschung B 54 (11), 1431-1440 1999 Polysulfonylamines, CXVIII-Hydrogen bonding in crystalline onium dimesylamides: Three prim.-ammonium dimesylamides exhibiting two-or three-dimensional hydrogen bond patternsD Henschel, O Moers, K Wijaya, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG SECTION BA JOURNAL OF CHEMICAL SCIENCES 54 … 1 1999 Polysulfonylamine, CXVII Wasserstoffbrücken in kristallinen Onium-dimesylamiden: Sechs systematisch variierte sek.-Ammonium-dimesylamide mit sechs verschiedenen null-, ein-oder …O Moers, K Wijaya, D Henschel, A Blaschette, PG Jones Zeitschrift für Naturforschung B 54 (11), 1420-1430 4 1999 Polysulfonylamines, CXVII [1]-Hydrogen bonding in crystalline onium dimesylamides: Six systematically varied sec-ammonium dimesylamides exhibiting six different zero-, one-, or …O Moers, K Wijaya, D Henschel, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG SECTION BA JOURNAL OF CHEMICAL SCIENCES 54 … 1 1999 1, 4, 7, 10-Tetraoxacyclododecane–acetone thiosemicarbazone (1/2)O Moers, K Wijaya, PG Jones, A Blaschette Acta Crystallographica Section C: Crystal Structure Communications 55 (9 … 11 1999 Polysulfonylamines. CIX. 1, 2, 4-Triazolium di (methanesulfonyl) amidateO Moers, K Wijaya, PG Jones, A Blaschette Acta Crystallographica Section C: Crystal Structure Communications 55 (5 … 11 1999 Polysulfonylamine, CXII. Neues aus der Festkörperchemie der 2-Pyridone: Isolierung und Röntgenstrukturen von Bis (2-pyridon) hydrogen (I)-und Bis (6-methyl-2-pyridon) hydrogen …K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 54 (5), 643-648 1999 Polysulfonylamines. CX. Hydroxylammonium di (methanesulfonyl) amidate 1, 4, 7, 10, 13, 16-hexaoxacyclooctadecane (1/1/1) and 2-aminopyridinium di (methanesulfonyl) amidate 1, 4 …D Henschel, K Wijaya, PG Jones, A Blaschette Acta Crystallographica Section C: Crystal Structure Communications 55 (4 … 4 1999 Original Communications-Polysulfonylamines, CXVII. Hydrogen Bonding in Crystalline Onium Dimesylamides: Six Systematically Varied sec-Ammonium Dimesylamides Exhibiting Six …O Moers, K Wijaya, D Henschel, A Blaschette, RG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 54 (11), 1420-1430 1999 Original Communications-Polysulfonylamines, CXII. A Novel Solid-State Aspect of 2-Pyridones: Isolation and X-Ray Structures of Bis (2-pyridone) hydrogen (l) and Bis (6-methyl-2 …K Wijaya, O Moers, A Blaschette, RG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 54 (5), 643-648 1999 Original Communications-Polysulfonylamines, CXVIII. Hydrogen Bonding in Crystalline Onium Dimesylamides: Three prim-Ammonium Dimesylamides Exhibiting Two-or Three-Dimensional …D Henschel, O Moers, K Wijaya, A Blaschette, PG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 54 (11), 1431-1440 1999 POLYSULFONYLAMINES, CXIX [1, 2]: HYDROGEN BONDING IN CRYSTALLINE ONIUM DIMESYLAMIDES: AN ANTIDROMIC EIGHT-MEMBERED RING PATTERN AS A ROBUST SUPRAMOLECULAR SYNTHON-THREE …K Wijaya, O Moers, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG 54 (11), 1441-1449 1999 Nichtkovalente Disulfonylamin-Derivate: Onium-Salze und CoronaplexeW Karna 1999 Nichtkovalente Disulfonylamin-Derivate: Onium-Salze und CoronaplexeK Wijaya na 1999 Polysulfonylamines, CXII. A Novel Solid-State Aspect of 2-Pyridones: Isolation and X-Ray-, Structures of Bis (2-pyridone) hydrogen (I) and Bis (6-methyl-2-pyridone) hydrogen (I …K Wijaya, O Moers, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 54 (5), 643-648 5 1999 Original Communications-Polysulfonylamines, CXIX. Hydrogen Bonding in Crystalline Onium Dimesylamides: An Antidromic Eight-Membered Ring Pattern as a Robust Supramolecular …K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift fur Naturforschung B-Journal of Chemical Sciences 54 (11), 1441-1449 1999 Benzo-18-krone-6-Acetonitril (1/2): Kristallisation und Tieftemperatur-Röntgenstrukturanalyse/Benzo-18-crown-6-Acetonitrile (1/2): Crystallization and Low-Temperature X-Ray …K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 53 (12), 1528-1530 1998 Polysulfonylamines. CVI. 1, 4, 7, 10, 13, 16-Hexaoxacyclooctadecane–Dimethyl Sulfoxide–Bis (4-fluorophenylsulfonyl) amine (1/2/2)K Wijaya, O Moers, A Blaschette, PG Jones Acta Crystallographica Section C: Crystal Structure Communications 54 (11 … 5 1998 Polysulfonylamines. CI. 1, 4, 7, 10-Tetraoxacyclododecane–Di (benzenesulfonyl) amine (1/2)K Wijaya, O Moers, PG Jones, A Blaschette Acta Crystallographica Section C: Crystal Structure Communications 54 (6 … 8 1998 BENZO-18-KRONE-6: ACETONITRIL (1K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung. B, A journal of chemical sciences 53 (12 … 1 1998 Polysulfonylamine, XCVI [1]. Homokonjugate aus Di (organosulfonyl) aminen und ihren konjugierten Anionen: Vier Kristallstrukturen mit asymmetrischen [N-H··· N …K Wijaya, D Henschel, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 52 (10), 1219-1228 1997 Polysulfonylamine, XCVII [1] Di (organosulfonyl) amine und ihre konjugierten Anionen als simultane Baugruppen in zwei supramolekularen Strukturen/Polysulfonylamines, XCVII [1 …D Henschel, K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 52 (10), 1229-1236 1997 Polysulfonylamines. 97. Di (organosulfonyl) amines and their conjugate anions as simultaneous building blocks in two supramolecular structuresD Henschel, K Wijaya, O Moers, A Blaschette, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG SECTION BA JOURNAL OF CHEMICAL SCIENCES 52 … 1 1997 Polysulfonylamine, XC [1] Carbonsäure-Dimere, Wasser-Dimere und 18-Krone-6-Moleküle als Baugruppen eines supramolekularen Kettenpolymers: Darstellung und Struktur von (CH2CH2O …K Wijaya, O Moers, A Blaschette, PG Jones Zeitschrift für Naturforschung B 52 (8), 997-1002 1997 Polysulfonylamines, XC. Carboxylic Acid Dimers, Water Dimers and 18-Crown-6 Molecules as Building Blocks in a Supramolecular Chain Polymer: Synthesis and Structure of (CH~ 2CH …K Wijaya, O Moers, A Blaschete, PG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 52 (8), 997-1002 1 1997 Polysulfonylamines, XCVI. Homoconjugates Formed from Di (organosulfonyl) amines and their Conjugate Anions: Four Crystal Structures Featuring Asymmetric [NH N]^-Hydrogen BondsK Wijaya, D Henschel, O Moers, A Blaschette, EG Jones ZEITSCHRIFT FUR NATURFORSCHUNG B 52 (10), 1219-1228 8 1997 Sustainable Energy Technologies and AssessmentsK Wijaya, T Jarin, C Sumathijones, OH Abd-Elkader, MOH Abd-Elkader, … BIOFUEL DI INDONESIAPDANSP PROSPEK, K WIJAYA Synthesis of SO 4 2–/ZrO 2 Solid Acid and Na 2 O/ZrO 2 Solid Base Catalysts Using Hydrothermal Method for Biodiesel Production from Low-Grade Crude Palm OilS Setyaningsih, M Utami, A Syoufian, E Heraldy, NW Yuwono, K Wijaya Indonesian Journal of Chemistry Application of Energy-Saving Distiller for Standardized Patchouli Oil Production in Patchouli Oil SME in Kulon ProgoK Wijaya, W Kurniawati, NW Yuwono, F Farida Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community … Kinetic Model of Crude Palm Oil Hydrocracking Over Ni/Mo ZrOH Hasanudin, MS Addy Rachmat, K Wijaya L., dan Tahir, l., 2008. Ekstraksi kalium dari abu tandan kosong sawit sebagai katalis pada reaksi transesterifikasi minyak sawitMI Yoeswono, W Karna Bulletin of Chemical Reaction Engineering and Catalyst 3, 14-20 3 OPTIMISASI RASIO DIAZINON/ASAM METAKRILAT SECARA TEORITIK BERDASARKAN METODA SEMIEMPIRIK AM1 UNTUK SINTESIS POLIMER TERCETAK MOLEKULA Saputra, K Wijaya, MN Ahmad, I Tahir Jurnal Ilmiah Berkala Sains dan Terapan Kimia 7 (2), 89-102 Effect of Temperature and Catalyst to Feed Ratio on Production Biofuel from Fatty Acid of Palm Oil Industrial Sludge HydrocrackingH Hasanudin, M Said, MH Dahlan, K Wijaya MATERIAL CuO/BENTONIT SEBAGAI BAHAN ANTIBAKTERI ESCHERICHIA COLIRY Fatmawati, K Wijaya, I Tahir BIMIPA 25 (3), 216-223 1 Triyono, & Sugiharto, E.(2006). Preparasi dan Karakterisasi TiO2-Zeolit Serta Pengujiannya pada Degradasi Limbah Industri Tekstil secara Fotokatalitik, IndoY Utubira, K Wijaya J. Chem 6 (3), 231-237 9 Polysulfonylamine, CXXV [1]. Neue Komplexe von Disulfonylaminen mit Kronenethern-im voraus entworfen oder zufällig entdecktC Polysulfonylamines, D by Serendipity, D Henschel, K Wijaya, O Moers, … Polysulfonylamine, CXLII [1]. Ein supramolekulares Monomer-Dimer-Paar: Starke und schwache Wasserstoffbrücken in den Kristallstrukturen von Pyridinium-dimesylamid und 4, 4 …P Dimesylamide, B Bis I. & Asean, F.(2003). Inklusi Senyawa P-Nitroanilin ke dalam Pori-pori Montmorillionit Terpilar TiO2K Wijaya, T Mudasir Jurnal Kimia 2 (6), 84-94 5 KAJIAN PENGARUH TEMPERATUR DAN KECEPATAN PENGADUKAN TERHADAP KONVERSI BIODIESEL DARI MINYAK SAWIT MENGGUNAKAN ABU TANDAN KOSONG SAWIT SEBAGAI KATALISA Luthfiyati, KW Yoeswono, I Tahir Sumerta., Wijaya, Karna., & Tahir, Iqmal. 2002I Kadek Fotodegradasi MEtilen Biru Menggunakan Katalis TiO2-Montmorilonit dan Sinar UV Benzo-18-krone-6 Ð Acetonitril (1/2): Kristallisation und Tieftemperatur-RöntgenstrukturanalyseK Wijaya, O Moers, A Blaschette, PG Jones Synthesis of Ag2O/Bentonite as Antibacterial Material CandidateITA Aziz, YS Kurniawan, I Tahir, K Wijaya Triyono, and Kunarti, ES, 2016, Microwave assisted preparation of zirconia-pillared bentoniteY Utubira, K Wijaya Int. J. ChemTech Res 9 (4), 475-482 6 Polysulfonylamine, XCVII [1] Di (organosulfonyl) amine und ihre konjugierten Anionen als simultane Baugruppen in zwei supramolekularen StrukturenX Polysulfonylamines, D Henschel, K Wijaya, O Moers, A Blaschette, … Drei prim.-Ammonium-dimesylamide mit zwei-oder dreidimensionalen WasserstoffbrückenmusternC Polysulfonylamines, HB Patterns, D Henschel, O Moers, K Wijaya, … ANALYSIS OF HYDROGEN ADSORPTION AND DIFFUSION ON Mg (0001) SURFACE: AN AB INITIO DFT STUDYIW Sutapa, R Armunanto, K Wijaya Jurnal Sains dan Terapan Kimia 4 (1), 23-28 PREPARATION OF BIODIESEL FROM NYAMPLUNG OIL (Calophyllum inophyllum Linn OIL) USING H-ZEOLITE AND NaOH AS THE CATALYSTK Wijaya, A Syoufian, M Ainuri Polysulfonylamine, CXVII [1] Wasserstoffbrücken in kristallinen Onium-dimesylamiden: Sechs systematisch variierte s££.-Ammonium-dimesylamide mit sechs verschiedenen null-, ein …CXV Polysulfonylamines, O Moers, K Wijaya, D Henschel, A Blaschette, … PRELIMINARY STUDIES ON HYDROTALCITE-LIKE SYNTHESIS USING MAGNESIUM FROM DESALINATION WASTEE Heraldy, SJ Triyono, K Wijaya, NB Alnavis, ES Rustina PEMBUATAN DAN UJI FOTOAKTIVITAS KOMPOSIT Ti02-BENTONIT UNTUK DEGRADASI SENYAWA PEWARNA METILEN BIRUI Tahir, K Wijaya Quantitative Structure and Glass Transition Temperature Relationships Analysis of Polyethylene AnaloguesI Tahir, K Wijaya, B Setiaji, Y Hidayat, BM Rod SINTESIS BIODIESEL DARI LIMBAH MINYAK NABATI TERKATALISIS (SO4/ZrO2) DAN (KOH/ZrO2)K Wijaya, E Wulandari BIODIESEL FROM CATFISH OIL (Clarias Gariepinus)GB Balabuana, K Wijaya, W Trisunaryanti KAJIAN TEORITIS SELEKTIVITAS THIACROWN ETHER 18S6 DAN 18-UT-6 TERHADAP SENYAWA LOGAM TRANSISI CF3COOAG DAN CDCL2 DENGAN METODE SEMIEMPIRIK ZINDOS HAMDANI, K WIJAYA, I TAHIR Prosiding Seminar Nasional Kimia XV ISSN NO 1410, 8313 THE EFFECT OF TEMPERATURE ON BIODIESEL CONVERSION FROM CALLOPHYLUM INOPHYLUM L (NYAMPLUNG) OIL CATALYZED BY H-ZEOLITE AND NaOHK Wijaya, A Syoufian, J Kusmasari fuel 3, 6 I., Liawati, I.(2004) Sintesis komposit oksida besi montmorillonit dan uji stabilitas strukturnya terhadap asam sulfatK Wijaya, E Sugiharto, IT Mudasir Indonesian Journal of Chemistry 4, 33-42 |