3-14-1 バイオディーゼル燃料生成反応に対する酸化カルシウムの触媒作用に関する検討(3-14 BDF1,Session 3 バイオマス等,研究発表)

概要

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A reaction to convert vegetable oil into biodiesel is markedly promoted by using calcium oxide as solid base catalyst. However, it is pointed out that a slight amount of soluble substance is leached away from the catalyst during the reaction. There is a possibility that the soluble substance catalyzes the conversion of vegetable oil. Since calcium oxide is turned into calcium diglyceroxide during the reaction, in order to discuss the heterogeneous catalysis, we employed calcium diglyceroxide for transesterification of soybean oil at reflux of methanol. An amount of the soluble substance was estimated from calcium content of the products: fatty acids methyl ester and glycerol. And further, the collected glycerol was used as the homogeneous catalyst for the soybean oil transesterification, instead of calcium diglyceroxide, for the purpose of measuring the catalytic activity of the soluble substance. Also, calcium oxide was tested in the same manner.
2009-07-30