固体酸催化合成肉桂酸系列酯  

Catalytic synthesis of cinnamic esters with solid acids

作　　者：马庆春[1] 王福生[1] 吕志凤[1] 战风涛[1] 

机构地区：[1]中国石油大学化学化工学院,山东青岛266555

出　　处：《日用化学品科学》2008年第12期38-41,共4页Detergent & Cosmetics

基　　金：中国石油大学(华东)山东省级化学实验中心实验改革项目

摘　　要：比较以硫酸盐和阳离子交换树脂分别为催化剂合成肉桂酸酯。硫酸盐中以硫酸高铈为催化剂效果较好,合成肉桂酸乙酯的合适酸醇摩尔比为n(酸):n(醇)=1:5,催化剂用量占物料总质量的15%,反应时间5h,转化率为92%,在此条件下合成其他肉桂酸的酯类,转化率在90%以上。阳离子交换树脂中D072为催化剂效果较好,合成肉桂酸乙酯的适宜酸醇摩尔比为n(酸):n(醇)=1:6.25,催化剂用量占物料总质量的18%,反应时间5h,转化率为92%,在此条件下合成其他成肉桂酸酯,转化率在92%～96%。硫酸高铈重复使用3次,D072催化剂可重复利用8次以上。Syntheses of cinnamic esters catalyzed by solid acids such as sulphate and ion-exchanged resin were surveyed. Studies indicated, the cerium sulphate is the excellent catalyst in sulphates, the suitable molar ratio of cinnamic acid to ethanol is 1：5, the weight percentage of catalyst is 15%, the reaction time is 5h, and the conversion of cinnamic acid is above 92%. D072 is the excellent catalyst in ion-exchanged resins, the suitable molar ratio of cinnamic acid to ethanol is 1 ： 6.25, the weight percentage of catalyst is 18%, the reaction time is 5h, and the conversion of cinnamic acid is above 92%. On the suitable conditions, the conversions of cinnamic acid are 92% - 96% in the preparation of other esters such as methyl ester, propyl ester and butyl ester et al. Cerium sulphate could be reused three times and D072 could be resused more than eight times.

关 键 词：肉桂酸酯 合成 硫酸高铈 离子交换树脂 

分 类 号：TQ245[化学工程—有机化工]