Synthesis of Biodiesel from Soybean Oil over MoO 3 -SnO 2 -CeO 2 Catalysts

The production of biodiesel by transesterification of soybean oil was performed on , and mixed oxides. The catalysts were characterized using XRD and -TPD. showed the highest activity among the three metal oxides. When 7 wt% of catalysts was introduced into the reactants, the highest activity was obtained and the water added to reactant decreased the catalytic activity. and mixed with 50:50 showed the highest activity and added with 20% on the mixed oxide also showed the highest activity. The catalytic activity showed to have a good relationship with the amount of acid site of catalysts. When the waste soybean oil was used as a reactant, the conversion was decreased about 30%.

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