Multi‐Step Controlled Kinetics of the Transesterification of Crude Soybean Oil with Methanol by Mg(OCH 3 ) 2

作者：Kai Huang, Q.‐L. Xu, Shenglu Zhang, Zhongjie Ren, Yuxin Yan · 发表于：Chemical Engineering & Technology · 年份：2009 · DOI：10.1002/ceat.200900089 · 被引用次数：15 · 研究领域：Biodiesel Production and Applications、Lubricants and Their Additives、Catalysis and Hydrodesulfurization Studies

Abstract 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, k 2 , k 2 + and k 2 – , were calculated and the corresponding apparent activation energies were calculated to be 67.450, 60.680 and 58.279 kJ·mol –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.