SYNTHESIS AND CHARACTERIZATIONS OF COBALT OXIDE WITHIN ZEOLITES AS CATALYST FOR FISCHER-TROPSCH REACTION

• Main Author: Setiawan, Fajar
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/35126
• Institution: Institut Teknologi Bandung

Petroleum crisis which is happening right now encourages the development of synthetic fuel. Attention is currently focused on the Fischer-Trospch reaction to produce fuel oil from the biomass gasification synthetic gas, natural gas, or coal. Fischer-Tropsch reaction is the conversion reaction of carbon monoxide (CO) and hydrogen (H2) into hydrocarbons which needs the help of a catalyst. Co-based products of the Fischer-Tropsch reaction have various lenghts of carbon chain. Therefore, additional reactions are needed to obtain a homolog product. Zeolite can act as a buffer that is able to run the cracking. The combination of cobalt-zeolite catalyst can be used as a catalyst in Fischer-Tropsch reaction which can directly run the cracking process. In this study, zeolite materials are synthesized using hydrothermal method at temperature of 140 0C for 40 hours. Cobalt-based catalyst was synthesized using the impregnation method. Products from the Co-Zeolite catalyst synthesis were characterized using XRD, SEM, and AAS. XRD diffractograms shows that the resulting zeolite is a type of sodalite and contains cobalt species which is Co3O4 (a mixture of CoO and Co2O3). SEM photographs show that the zeolite and the catalyst Co / zeolite produced have the size and shape of aggregates that are not uniform and porous. The composition of cobalt on the catalyst was analyzed using the AAS, and shows 9.3% cobalt mass. This composition is quite close to the % mass of cobalt in the mixture of Co(NO3).6H2O and zeolite used in the synthesis of 10%.