期刊论文

Synthesis of ethyl cinnamate catalyzed by inorganic solid acid

中文

工业催化

1008-1143

2003

11

10

30-32

10.3969/j.issn.1008-1143.2003.10.006

01C022:湖南省教育厅科学研究项目

本校为其他机构

在五水四氯化锡存在下,肉桂酸和乙醇发生酯化反应合成肉桂酸乙酯.考察了五水四氯化锡用量、酸醇摩尔比和反应时间对肉桂酸乙酯收率的影响.在n(肉桂酸) :n(乙醇):n(五水四氯化锡)=1:7.5:0.22、回流反应3 h条件下,酯收率达91.4%,并考察了六水三氯化铁、十二水合硫酸铁铵和一水硫酸氢钠催化合成肉桂酸乙酯的催化活性.

Ethyl cinnamate was synthesized by esterification of cinnamic acid with ethanol in the presence of stannic chloride pentahydrate catalyst. The effects of amount of the catalyst, cinnamic acid/ethanol molar ratio and reaction time on the yield of ethyl cinnamate were investigated. Yield of 91.4% was attained under the following condition: cinnamic acid∶ethanol∶stannic chloride =1∶75∶022, reflux, 3 h. The catalytic activity of ferric chloride hexahydrate, ammonium ferric sulfate dodecahydrate and sodium bisulfate monohyd...