碳酸二甲酯作酯化试剂催化合成水杨酸甲酯

化工进展

碳酸二甲酯作酯化试剂催化合成水杨酸甲酯

苏小威；董满祥；李军平；魏伟；孙予罕

中国科学院山西煤炭化学研究所煤转化国家重点实验室；中国科学院研究生院；中国石油兰州石油化工工程公司

出版日期:2007-10-25 发布日期:2007-10-25

Dimethyl carbonate as esterifying agent for the synthesis of methyl salicylate

SU Xiaowei；DONG Manxiang；LI Junping；WEI Wei；SUN Yuhan

State Key Laboratory of Coal Conversion，Institute of Coal Chemistry，Chinese Academy of Sciences；Graduate School of Chinese Academy of Sciences；Lanzhou Petroleum & Chemical Engineering Company

Online:2007-10-25 Published:2007-10-25

摘要/Abstract

摘要： 报道使用一系列具有不同丙磺酸含量的SBA-15-SO₃H分子筛为催化剂，考察了碳酸二甲酯作为酯化试剂与水杨酸发生反应制备水杨酸甲酯。结果表明，碳酸二甲酯是一种很好的酯化试剂，在一定的反应条件下，水杨酸的转化率和水杨酸甲酯的选择性可达到96.7％和57.7％。通过研究催化剂酸性对反应的影响，发现随着催化剂酸性增强和酸量增加，水杨酸的转化率和水杨酸甲酯的选择性也逐渐增高。

Abstract: The synthesis of methyl salicylate（MS）from salicylic acid（SA）and dimethyl carbonate（DMC）was investigated over a series of SBA-15-SO₃H zeolite catalysts containing different amounts of sulfonic acid in this work. The results showed that the conversion of SA and the selectivity for MS could reach 96.7% and 57.7% in a specific reaction condition. The conversion of SA and the selectivity of MS were correlated with the strengths and species of acid sites on the catalysts. Based on the experiment results，a reaction mechanism for the esterification of SA with DMC over SBA-15-SO3H was proposed.

中图分类号:

TQ 032

苏小威；董满祥；李军平；魏伟；孙予罕. 碳酸二甲酯作酯化试剂催化合成水杨酸甲酯 [J]. 化工进展.

SU Xiaowei；DONG Manxiang；LI Junping；WEI Wei；SUN Yuhan. Dimethyl carbonate as esterifying agent for the synthesis of methyl salicylate[J]. Chemical Industry and Engineering Progree.