杂多酸盐催化剂催化合成乳酸正丁酯

SYNTHESIS OF NBUTYL LACTATE USING TiSiW12O40/TiO2 AS CATALYSIS

报道了新型杂多酸盐催化剂ＴｉＳｉＷ１２Ｏ４０／ＴｉＯ２的制备方法，实验考察了该催化剂催化酯化合成乳酸正丁酯的醇酸比、催化剂用量、带水剂、反应时间等因素对酯收率的影响．实验表明，在以苯为带水剂时，催化剂的用量为反应液的１．３％，醇酸摩尔比为２．０∶１，酯化反应时间为１１０ｍｉｎ，乳酸正丁酯的收率可达９５％．

In this paper,the synthesis of nbutyl Lactate using TiSiW12O40/TiO2 as catalysis has been studied.The optimum conditio n are:mol ratio of nbutyl alcohol to Lactate 2∶1 the quantity of catalyst go feedstock 1.3%(wt.),hydrocarrying agent benzene and the reaction time 110 min.Re sult show that TiSiW12O40/TiO2 is a very high catalystic activity. The quality of products are very fine.