期刊
APPLIED CATALYSIS A-GENERAL
卷 248, 期 1-2, 页码 161-167出版社
ELSEVIER
DOI: 10.1016/S0926-860X(03)00152-2
关键词
esterification; aromatic carboxylic acids; dimethyl carbonate; zeolites; kinetics
Esterification of benzoic acid and substituted benzoic acids has been carried out efficiently over zeolite HP and HZSM5 in an autoclave using dimethyl carbonate (DMC) as the methylating agent. The wide applicability of this esterification method to esterify, a wide range of aromatic carboxylic acids has been demonstrated. This method is a viable and safe alternative to other esterification processes, involving harmful alkylating agents and chemicals. Strong acid sites are responsible for the reaction. The reaction proceeds inside as well as outside the pores of the zeolites. The pore architecture of the zeolites and mass transfer limitations come into play only when the molecular diameter of the reactant molecules is greater than the pore size of the zeolites. Kinetic study shows that the reaction is first-order with respect to acid concentration. (C) 2003 Elsevier Science B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据