合成材料老化与应用2026，Vol.55Issue(4)：27-32,100,7.
酯-酯交换合成碳酸甲乙酯和碳酸二乙酯的催化机理研究
Investigation on the Catalytic Mechanism of Ester-Ester Transesterification for EMC and DEC Synthesis
摘要
Abstract
Using dimethyl carbonate and ethyl acetate as raw materials and sodium methoxide methanol solution as the catalyst,ethyl methyl carbonate and diethyl carbonate were synthesized via ester-ester transesterification under normal temperature and pressure.To systematically investigate the catalytic mechanism of the reaction,various characterization methods were adopted,including gas chromatography-mass spectrometry,Zeta potential and nanoparticle size analyzer,Abbe refractometer and infrared spectroscopy.The results show that solid sodium methoxide crystals do not have catalytic activity because they are insoluble in the ester reaction system;the solvation effect of methanol can make sodium methoxide dissociate into methoxy anions and disperse to form ultrafine nanoparticles,providing a large number of catalytic active centers and enabling the reaction to reach equilibrium within 30 seconds.The ester-ester transesterification is essentially a dynamic equilibrium between two active intermediates,methoxy anions and ethoxy anions,and five ester compounds in the system.This exploration provides an important theoretical basis for the industrial application of this process.关键词
酯-酯交换/碳酸甲乙酯/碳酸二乙酯/催化机理/活性中间体Key words
transesterification/ethyl methyl carbonate/diethyl carbonate/catalytic mechanism/active intermediate分类
化学化工引用本文复制引用
郑知勤..酯-酯交换合成碳酸甲乙酯和碳酸二乙酯的催化机理研究[J].合成材料老化与应用,2026,55(4):27-32,100,7.基金项目
福建省莆田市科技项目(2022GM001). （2022GM001）
