研究了离子交换树脂催化碳酸乙烯酯(EC)和甲醇(MeOH)酯交换合成碳酸二甲酯(DMC)的反应动力学。在间歇搅拌釜式反应器中研究了催化剂的种类、搅拌速率、醇酯摩尔比、催化剂用量和反应温度对酯交换过程的影响;采用拟均相动力学模型对实验数据进行关联。结果表明,估算的动力学参数使计算结果和实验数据吻合较好,建立了离子交换树脂催化酯交换反应的动力学模型,为反应精馏过程中的模拟计算以及工业化生产提供了一定的理论支持。

The reaction kinetics of dimethyl carbonate (DMC) synthesis via ion exchange resin catalyzed transesterification between ethylene carbonate (EC) and methanol (MeOH) is explored.Through experiments carried out in a batch stirred kettle reactor,the influences of catalyst type,stirring speed,initial molar ratio of alcohol to ester,the dosage of catalyst and reaction temperature on transesterification are studied in detail.A proposed homogeneous kinetic model is used to correlate the experimental data.Results indicate that the kinetic parameters estimated make the calculated results accord with experimental data well.A kinetic model is established for the ion exchange resin catalyzed transesterification reaction,providing some theoretical support for the simulation and calculation of the reactive distillation process as well as industrial production.

李强(1996-),男,硕士生,研究方向为反应精馏,15536982886@163.com;王红星(1978-),男,博士,教授,研究方向为化工强化、化工过程系统工程,通讯联系人,wanghx@tust.edu.cn。