LaCl_3·7H_2O催化合成异丁酸酯  

Catalytic Synthesis of Isobutyrate over LaCl_3·7H_2O

作　　者：陈献桃[1] 

机构地区：[1]湖南理工学院化学化工系,湖南岳阳414000

出　　处：《稀土》2006年第5期96-98,共3页Chinese Rare Earths

摘　　要：以L aC l3.7H2O替代传统液体无机酸为催化剂,以合成异丁酸正丁酯为探针反应考察催化酯化反应的优化条件,并在此条件下合成了多种异丁酸酯,比较了不同催化剂对催化合成异丁酸正丁酯的影响。实验结果表明,L aC l3.7H2O对酯化反应具有良好的催化活性,并能避免液体无机酸催化剂所引起的弊端,异丁酸正丁酯的酯化率可达96.5%。且催化剂易回收,反应后处理简单,无废酸排放,是一种环境友好型催化剂。With LaCl3·7H2O as catalyst to replace conventional liquid inorganic acid, and the esterification between isobutyric acid and n--butyl alcohol as a probe reaction, the optimum conditions were investigated and various isobutyrates were synthesized over it in this paper. Its catalytic activity to synthesis of butyl isobutyrate was compared with others. The results showed that the catalyst had good catalytic activity to esterification. The drawback brought by using conventional liquid inorganic acid to catalyze esterification could be avoided. The yield of n-butyl isobutyrate was 96.5% under the optimum conditions, and it had good catalytic activity in other esterification. The catalyst could be recovered easily and the after-treatment was simple. No waste acid was discharged. It was an environmentally friendly catalyst.

关 键 词：LaCl3·7H20 异丁酸酯 酯化反应 催化活性 

分 类 号：TQ245[化学工程—有机化工] TQ426