H_3PW_(12)O_(40)/TiO_2催化合成对羟基苯甲酸丁酯  

Synthesis of n-butyl p-hydroxybenzoate catalyzed by H_3PW_(12)O_(40)/TiO_2

作　　者：陈彦[1] 廖维林[1] 许招会[1] 

机构地区：[1]江西师范大学化学化工学院,江西南昌330027

出　　处：《工业催化》2009年第10期55-57,共3页Industrial Catalysis

基　　金：江西师范大学青年成长基金资助项目(1341)

摘　　要：采用溶胶-液相法制备了H_3PW_(12)O_(40)/TiO_2复合催化剂,用FT-IR分析方法对催化剂进行了结构表征。以对羟基苯甲酸和正丁醇为原料,合成了对羟基苯甲酸丁酯,考察反应物配比、催化剂用量、反应时间及催化剂的重复使用性能对产品收率的影响。结果表明,合成对羟基苯甲酸丁酯的较优反应条件为:对羟基苯甲酸0.1 mol,n(对羟基苯甲酸):n(正丁醇)=1.0:5.0,催化剂用量1.2 g,反应时间4.0 h,在此条件下,对羟基苯甲酸丁酯收率可达85%以上。H3PW12O40/TiO2 catalyst was prepared by sol-gel method and characterized by FT-IR. The H3PW12040/TiO2 was used as the catalyst for synthesis of n-butyl p-hydroxybenzoate from n-hydroxy ben- zoic acid and n-butyl alcohol. The effects of reactants proportion, catalyst dosage, reaction time and repeated use of the catalyst were investigated and the favorable reaction condition was obtained as follows ： p-hydroxy benzoic acid 0.1 mol, n （p-hydroxy benzoic acid） ： n （ n-butyl alcohol） = 1.0： 5.0, dosage of the catalyst 1.2 g, reaction time 4.0 h. n-Butyl p-hydroxybenzoate yield of over 85% was attained under the above-mentioned reaction condition.

关 键 词：催化化学 磷钨酸 钛酸四丁酯 对羟基苯甲酸丁酯 催化合成 

分 类 号：O643.36[理学—物理化学] O625.54[理学—化学]