磷钨酸-拟薄水铝石负载催化剂合成对羟基苯甲酸乙酯  

Phosphatotungstic Acids Catalysts Supported on Alumina

作　　者：叶天旭[1] 刘京燕[1] 张斌[1] 马雪妮[1] 

机构地区：[1]中国石油大学(华东)化学化工学院青岛266555

出　　处：《应用化学》2009年第9期1114-1116,共3页Chinese Journal of Applied Chemistry

基　　金：山东省自然科学青年基金资助项目(Y08059)

摘　　要：以拟薄水铝石负载的磷钨酸为催化剂,通过对羟基苯甲酸乙酯的合成产率及磷钨酸的溶脱率的测定,考察了催化剂的催化性能和负载程度。结果表明,在拟薄水铝石的焙烧温度400℃,磷钨酸的焙烧温度180℃的条件下,对羟基苯甲酸乙酯的合成最高产率达83.8%,磷钨酸的溶脱率为2.8%。重复使用6次后,总的溶脱率为12.5%。Phosphatotungstic acids （H3PW12O40, PW12 ） supported on alumina were employed to catalyze the synthesis of ethyl p-hydroxybenzoate. By means of the yield of ethyl p-hydroxybenzoate and the dissolution of HPAs, we researched the function and strength of the catalyst. When the roasting temperature of alumina was 400 ℃ and PW12 was 180 ℃, the yield of ethyl p-hydroxybenzoate was up to 83.8%, and the rate of dissolution of PW12 was 2. 8%. Even after the catalyst was recycled for six times, the rate of dissolution of phosohotungstic acid was 12.5%.

关 键 词：磷钨酸 拟薄水铝石 载体 催化 

分 类 号：O643.3[理学—物理化学] TQ016.1[理学—化学]