固体酸催化剂在对羟基苯甲酸酯合成中的应用  

APPLICATION OF SOLID ACID CATALYST IN THE ESTERIFICATION OF p-HYDROXYBENZOIC ACID

作　　者：菅盘铭[1] 许言和 王秋莹[1] 

机构地区：[1]兰州大学化学系

出　　处：《精细石油化工》1992年第3期29-31,共3页Speciality Petrochemicals

摘　　要：考察了SO_4^(2-)/膨润土固体酸催化剂在对羟基苯甲酸与甲醇、乙醇、正丁醇酯化反应中的作用,以及反应时间,催化剂用量和溶剂对酯化反应的活性的影响。实验发现,在以甲苯作溶剂,反应温度95～110℃,反应时间3～4h,催化剂用量0.4m％条件下,催化效果最佳,表明该催化剂是一种有效的对羟基苯甲酸酯化催化剂。Methyl, ethyl and butyl p-hydroxybenzoate were synthesized on SO_4^(2-)/bentonite catalyst. The effects of reaction time, catalyst amount and solvent on catalytic activity were investigated, and it was found that the optimum reaction conditions are reaction temperature 95～110℃, reaction time 3～4h, catalyst amount 0.4m% with toluene as solvent; the yield is about 90% or more. The results showed that SO_4^(2-)/bentonite solid acid is a better catalyst for esterification of p-hydroxybenzoic acid.

关 键 词：固体酸催化剂 对羟基苯 甲酸酯 

分 类 号：TQ225.241[化学工程—有机化工]