화학공학소재연구정보센터
Chemical Engineering & Technology, Vol.32, No.10, 1595-1604, 2009
Multi-Step Controlled Kinetics of the Transesterification of Crude Soybean Oil with Methanol by Mg(OCH3)(2)
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.