结晶三氯化铝催化合成乙酸正丁酯的研究

A Study of Compound of n-Butyl Acetate Cqtqlyzed by Crystaline Aluminum Trichloride

乙酸正丁酯是具有水果香味的无色液体,作为溶剂广泛应用于清漆、塑料、制革等行业,也是化工、制药、香料等行业的重要原料。传统上羧酸酯类的合成都是用浓硫酸作催化剂,但存在诸如设备易腐蚀、副反应多、废酸排放污染环境等弊端犤1犦。因此人们不断寻求更优良的催化剂来代替硫酸,近年来,已发现氨基磺酸、结晶固体酸、杂多酸、无机盐等均可作为酯化反应的催化剂犤2-3犦,但用结晶三氯化铝催化合成乙酸正丁酯尚未见报道。采用结晶三氯化铝催化合成乙酸正丁酯具有用量少、价廉、快速、产率较高、操作安全、污染小等优点。文中讨论了影响结晶三氯化铝催化合成乙酸正丁酯反应的因素,在催化剂用量为3.5g、醇酸摩尔比为1.6时,酯化产率可达86.4%。

In this paper, compound reaction of n-butyl acetate catalyzed with crystalline aluminum trichloride is reported with an investigation of the optimum conditions for the synthesis reaction. Crystalline aluminum trichloride is an ideal substitute for sulfonic acid and a catalyst with many advantages of being small in amount,low in price, fast in speed, safe in operation.little in pollution and high in yield.The yield of the synthesis reaction could be 86.4%.