月桂酸甲酯烷氧基化反应动力学研究

Study of reaction kinetics of direct alkoxylation of methyl laurate

基于一级反应动力学机理,研究了以月桂酸甲酯、环氧乙烷(EO)、环氧丙烷(PO)为原料,MCT-09为催化剂合成月桂酸甲酯烷氧基化物的反应动力学。建立了反应动力学模型,通过反应动力学实验,将实验数据回归拟合,确定反应动力学参数。讨论了温度对烷氧基化反应速率常数k的影响,求得月桂酸甲酯乙氧基化、丙氧基化反应的活化能分别为50.715 kJ/mol和68.757 kJ/mol,优化月桂酸甲酯烷氧基化反应温度为463 K。

Reaction kinetics on alkoxylation with methyl laurate, ethylene oxide （EO） and propylene oxide （PO） as starting materials and MCT -09 as catalyst was studied based on the proposed first order reaction kinetic mechanism. The reaction kinetic model was set up. Through experiments, with regression of the experimental data, the reaction kinetics parameters were determined. The effect on the alkoxylation rate constant k caused by different temperature was discussed. Results indicated that the activation energy for ethoxylation and propoxylation of methyl laurate is 50. 715 kJ/mol and 68.757 kJ/mol respectively, and the optimized reaction temperature is 463 K.