固载杂多酸催化合成乳酸正丁酯  

Catalytic Synthesis of n-Butyl Lactate by Heteropoly Acid

作　　者：王顺梅[1] 郭俊胜[1] 

机构地区：[1]新乡师范高等专科学校化学系,河南新乡453000

出　　处：《河南师范大学学报（自然科学版）》2002年第1期66-68,共3页Journal of Henan Normal University(Natural Science Edition)

摘　　要：用固载杂多酸PW12 /SiO2 为催化剂 ,实现了乳酸与正丁醇反应合成乳酸正丁酯 .最佳合成条件为 :n(酸 )∶n(醇 ) =1∶3.0 ,催化剂用量为乳酸质量的 5 %,反应时间为 2h ,产率可达 92 %.催化剂具有容易回收并可循环使用不污染环境等优点 .In the presence of Heteropoly acid catalys PW 12 /SiO 2,Lactic acid reacted with n-butyl alcohol to form n-butyl lactate.The optimum conditions were as follow:molar ratio of lactic acid to n-butyl alcohol was 1∶3.0,reaction time of reflux was 2h,mass of catalyst was 5% of lactic acid.The yield of n-butyl lactate reached 92%.The catalyst had many advantages,such as easiness to be recovered,feasibility to be used repeatedly,and less pollution to the environment.

关 键 词：固载杂多酸催化剂 PW12/SiO2 催化酯化 乳酸正丁酯 合成工艺 原料配比 

分 类 号：TQ225.24[化学工程—有机化工]