Coupling reaction of dimethyl succinate and ethylene carbonate over zinc oxide

MA Kai; LIU Shaoying; LI Jianguo; YAO Jie; WANG Gongying

doi:10.3969/j.issn.0438-1157.2012.11.021

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Coupling reaction of dimethyl succinate and ethylene carbonate over zinc oxide

更新时间：2025-12-10

- Coupling reaction of dimethyl succinate and ethylene carbonate over zinc oxide
- CIESC Journal Issue 11, Pages: 3525-3530(2012)
- 作者机构：
  
  1. 中国科学院成都有机化学研究所,四川,成都,610041
  2. 中国科学院研究生院,北京,100049
  3. 常州化学研究所常州市绿色化学与技术重点实验室,江苏,常州,213164
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.11.021
  CLC： 631.5
- Online First：05 November 2012，
  
  Published：05 November 2012
- 稿件说明：
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MA Kai, LIU Shaoying, LI Jianguo, et al. Coupling reaction of dimethyl succinate and ethylene carbonate over zinc oxide[J]. CIESC Journal, 2012, (11): 3525-3530.
DOI：

MA Kai, LIU Shaoying, LI Jianguo, et al. Coupling reaction of dimethyl succinate and ethylene carbonate over zinc oxide[J]. CIESC Journal, 2012, (11): 3525-3530. DOI： 10.3969/j.issn.0438-1157.2012.11.021.

摘要

研究了ZnO催化碳酸乙烯酯和丁二酸二甲酯耦合反应合成聚丁二酸乙二醇酯预聚体和碳酸二甲酯的新工艺。考察了ZnO催化剂焙烧温度对耦合反应的催化活性

优化了反应条件。并对ZnO催化剂进行XRD、BET和NH3-TPD表征。以FTIR和1H NMR表征聚丁二酸乙二醇酯预聚体。结果表明

在225~235℃

EC/DMSu摩尔比为2

催化剂/(EC+DMSu)摩尔比为0.005

反应时间为3 h的反应条件下

碳酸二甲酯收率为59.7%

聚丁二酸乙二醇酯预聚物的特性黏度为0.3857 dl·g-1。通过XRD和NH3-TPD分析

推测ZnO表面的晶体缺陷和弱酸性是影响耦合反应催化活性的原因。

Abstract

A new technology of synthesis of poly(ethylene glycol succinate)(PES)oligomers and dimethyl carbonate(DMC)by coupling reaction of ethylene carbonate(EC)and dimethyl succinate(DMSu)over ZnO was studied.The effect of calcination temperature of ZnO catalysts on catalytic activity was investigated and ZnO catalysts were characterized with XRD

BET and NH3-TPD.PES oligomers were characterized with FTIR and 1H NMR.The preferable reaction conditions were as follows:reaction temperature 225-235℃

molar ratio of EC to DMSu 2

molar ratio of catalyst to the total mass of EC and DMSu 0.005

reaction time 3 h.Under these conditions

the yield of DMC was 59.7%

the intrinsic viscosity of PES oligomer was 0.3857dl·g-1.The catalytic activity of coupling reaction was affected possibly by the degree of crystallization and the weak acid sites on the surface of ZnO.

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