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Synthesis of Co-NH2/mesoporous silica bifunctional catalyst for conversion of used cooking oil into biofuel was carried out. Synthesis of mesoporous silica (MS) was done by the hydrothermal method using silica from Sidoarjo mud and gelatin from bovine bone as a template. Weight ratio variation of silica/gelatin was 4, 6, and 8 produced MS4, MS6, and MS8 respectively characterized by FTIR. The MS with minimum gelatin content after calcination (MS8) was identified using FTIR, TEM, and SAA. The impregnation of Co into the MS8 was done by the wet impregnation method and the Co/MS8 catalyst was analyzed using XRF and acidity test with NH3 vapor adsorption. Functionalization of NH2 into the MS8 and Co/MS8 was done by the grafting method and the products were characterized using FTIR. The catalytic activity test in used cooking oil hydrocracking was done by thermal (without catalyst), physical mixture of Co/MS8 and NH2/MS8 catalyst, and Co-NH2/MS8 bifunctional catalyst. The hydrocracking liquid products were investigated by GC-MS. The MS8 had a specific surface area of 666.76 m g, a pore diameter of 4.9 nm, and a pore volume of 0.46 cm g. The Co-NH2/MS8 bifunctional catalyst produced the highest liquid product of 97.62 wt.% in the hydrocracking of used cooking oil with selectivity for gasoline and diesel fraction of 3.02 and 46.86 wt.%.

rasayan journal of chemistry/rasayan journal of chemistry

SYNTHESIS OF Co-NH2/MESOPOROUS SILICA BIFUNCTIONAL CATALYST USING SIDOARJO MUD AND BOVINE BONE GELATIN TEMPLATE FOR CONVERSION OF USED COOKING OIL INTO BIOFUEL