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Iron Oxide Catalysts Supported on Porous Silica for the Production of Biodiesel from Crude Jatropha Oil

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Journal of the American Oil Chemists' Society


A heterogeneous catalyst, FeO x /SiO2, prepared by the pore-filling method, was found to be active in the transesterification of crude Jatropha oil with methanol. When the transesterification reaction was carried out with a reaction temperature of 220 °C, a catalyst amount of 15 wt%, a methanol/oil molar ratio of 218:1, and a reaction time of 3 h, the yield of fatty acid methyl esters (FAME) in the product exceeded 99.0 %, and met with EN standards for allowable contents of glycerine and mono-, di-, and tri-glycerides. The correlation between the FAME production activity and measured acidity of the FeO x /SiO2 catalysts showed that the transesterification reaction was promoted via the acidic function of these catalysts, which are less inhibited by coexisting free fatty acids in the feedstock triglycerides.

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This work was supported by the Japan Science and Technology Agency, and the Science and Technology Research Partnership for Sustainable Development.

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Correspondence to Yuji Yoshimura.

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Suzuta, T., Toba, M., Abe, Y. et al. Iron Oxide Catalysts Supported on Porous Silica for the Production of Biodiesel from Crude Jatropha Oil. J Am Oil Chem Soc 89, 1981–1989 (2012).

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