摘要
以磷钨酸为催化剂，用乳酸和正丁醇为原料制备了乳酸亚丁酯。催化剂用量为原料总质量的０．５％，酸醇比为１：１，反应温度１１０～１２５℃，反应时间２小时，粗酯收率可达９８．６％。催化剂可重复多次使用。
Butyl lactate was prepared from lactic acid and n - butyl alcohol in the presence of phosphorictungs acid catalyst. The yield of the ester can reach over 98% under mole-ratio of lactic acid and n - butyl alcohol was 1: 1, the reaction temperature of 110125℃, reaction time of 2h and the amount of phosphorictungs acid of 0. 1g per 100g reaction input material. Phosphorictungs acid catalyst can be used repeatedly.
关键词
磷钨酸催化剂
乳酸
正丁醇
乳酸正丁酯
合成
phosphorictungs acid
lactic acid
n - butyl alcohol
butyl lactate
catalyst
