TiSiW_(12)O_(40)/TiO_2催化合成丁酸酯的研究  

Catalytic Synthesis of Butyric Esters with TiSiW_(12)O_(40)/TiO_2

作　　者：杨水金[1] 陈露春[1] 梁永光[1] 孙聚堂[2] 

机构地区：[1]湖北师范学院化学系,湖北黄石435002 [2]武汉大学化学系,湖北武汉430072

出　　处：《香料香精化妆品》2001年第5期9-11,共3页Flavour Fragrance Cosmetics

基　　金：湖北省自然科学基金 (No .99J0 64 )资助项目

摘　　要：本文报道了以固载杂多酸盐TiSiW12 O4 0 /TiO2 为多相催化剂 ,对以乙醇、丙醇、丁醇、正戊醇、异戊醇和正丁酸为原料合成丁酸系列酯的反应条件进行了研究。实验表明 :TiSiW12 O4 0 /TiO2 是合成丁酸系列酯的良好催化剂 ,最佳反应条件为 :醇酸摩尔比为 1 .2 -1 .3∶1 ,催化剂用量为反应物料总量的 1 .5 -2 .0 % ,反应时间为 1 .0 -2 .0h。上述条件下 ,丁酸乙酯的产率为 75 .6% ,丁酸丙酯的产率为 81 .3 % ,丁酸丁酯的产率为 84 .8% ,丁酸戊酯的产率为 85 .1 % ,丁酸异戊酯的产率为 83 .1 %。The synthesis of butyric esters were studied with ethyl alcohol, propyl alcohol, n-butyl alcohol, n-amyl alcohol, iso-amyl alcohol and n-butanoic acid as reacta nts, and reaction conditions were selected. It showed that TiSiW_12O_40/TiO_2 was an excellent catalyst for the synthesis of butyric esters, and the optimun reaction conditions was that the molar ratio of alcohol to acid was 1.2-1.3∶1, the mass ratio of the catalyst used to the reac tants was 1.5-2.0%, and the reaction time was 1.0-2.0h. Under this conditions, t he yield of ethyl ester was 75.6%, propyl ester 81.3%, n-butyl ester 84.8%, n-am yl ester 85.1%, iso-amyl ester 83.1%.

关 键 词：丁酸酯 TISIW12O40/TIO2 催化剂 催化合成 固载杂多酸盐 

分 类 号：TQ225[化学工程—有机化工]