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Multi‐Step Controlled Kinetics of the Transesterification of Crude Soybean Oil with Methanol by Mg(OCH 3 ) 2
Author(s) -
Huang K.,
Xu Q.L.,
Zhang S.P.,
Ren Z.W.,
Yan Y.J.
Publication year - 2009
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200900089
Subject(s) - transesterification , methanol , chemistry , yield (engineering) , catalysis , reaction rate constant , mass transfer , soybean oil , chemical equilibrium , reaction rate , kinetics , chemical kinetics , thermodynamics , equilibrium constant , kinetic energy , work (physics) , order of reaction , organic chemistry , chromatography , physics , food science , quantum mechanics
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.