L. Jing
2011
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Journal
Applied Chemical Industry
Abstract
Oleic acid isobutyl ester was prepared by the esterification of oleic acid with isobutyl alcohol in the presence of ionic liquids catalysts.The effect of preparation conditions including catalyst amount,ratio of ethanol to acid,reaction time and temperature on the yield of oleic acid isobutyl ester and the effect of oleic acid isobutyl ester on reducing pour point of biodiesel were researched.The results showed that the catalyst amount was 2%,volume ratio of isobutyl alcohol to oleic acid was 2 ∶1(molar ratio was 6.8 ∶1),reaction temperature was 100 ℃,reaction time was 3 h,the yield of oleic isobutyl ester was up to 95.6%.Experimental results showed that oleic acid isobutyl ester could improve the low temperature fluidity of biodiesel by reducing its solidification point and cold filter plugging point.