Magnetic Solid Base Catalysts for the Production of Biodiesel

文献类型： 外文期刊

第一作者： Guo, Pingmei

作者： Guo, Pingmei;Huang, Fenghong;Zheng, Mingming;Li, Wenlin;Huang, Qingde;Guo, Pingmei;Huang, Fenghong;Zheng, Mingming;Li, Wenlin;Huang, Qingde

作者机构：

关键词： Biodiesel;Magnetic Solid Base Catalyst;Transesterification

期刊名称：JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY （ 影响因子：1.849； 五年影响因子：2.299 ）

ISSN： 0003-021X

年卷期： 2012 年 89 卷 5 期

页码：

收录情况： SCI

摘要： Magnetic solid base catalysts were prepared by loading Na2SiO3 on Fe3O4 nano-particles with Na2O center dot 3SiO(2) and NaOH as precipitator. The catalysts were used to catalyze the transesterification reactions for the production of fatty acid methyl esters (FAME, namely biodiesel) from cottonseed oil. The optimum conditions of the catalysts' preparation and transesterification reactions were investigated by orthogonal experiments. The catalyst with the highest catalytic activity was obtained when Si/Fe molar ratio of 2.5, aging time of 2 h, calcination temperature of 350 degrees C, calcination time of 2.5 h. Magnetic of the catalyst was characterized with Vibrating Sample Magnetometer (VSM) and transmission electron microscopy photograph (TEM), and the results showed the catalyst Na2SiO3/Fe3O4 had good specific saturation magnetization and paramagnetism, and its water resistance was better than the traditional homogeneous base catalysts; under the transesterification conditions of methanol/oil molar ratio of 7: 1, catalyst dosage of 5%, reaction temperature of 60 degrees C, reaction time of 100 min and stirring speed of 400 rpm, yield of biodiesel was 99.6%. The lifetime and recovery rate of the magnetic solid base catalyst were much better than those of Na2SiO3.

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