文献类型：期刊文献

英文题名：Multi-Step controlled kinetics of the transesterification of crude soybean oil with methanol by Mg(OCH3)2

作者：Huang, Kai[1]; Xu, Qingli[1]; Zhang, Suping[1]; Ren, Zhengwei[1]; Yan, Yongjie[1]

机构：[1] Research Center for Biomass Energy, East China University of Science and Technology, Shanghai, China

年份：2009

卷号：32

期号：10

起止页码：1595

外文期刊名：Chemical Engineering and Technology

收录：EI(收录号：20094312394207)

语种：英文

外文关键词：Catalysts - Transesterification - Magnesium compounds - Mass transfer - Soybean oil - Activation energy - Rate constants

摘要：This work focuses on a kinetic model that can be expressed as three significant controlled regions, i.e., a mass transfer controlled region in the internal surface of a heterogeneous catalyst, an irreversible chemical reaction controlled region in the pseudo-homogenous fluid body and a reversible equilibrium chemical reaction controlled region near to the transesterification equilibrium stage. With the help of MATLAB7.0 software, the apparent reaction rate constants, k2, k2+ and k2-, were calculated and the corresponding apparent activation energies were calculated to be 67.450, 60.680 and 58.279 kJmol-1, respectively. According to the confirmation experiments, it is indicated that the results can be applied for predicting the FAME yield at other reaction temperatures. ? 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.