强酸性阳离子交换树脂催化合成乳酸正丁酯

摘要

N - butyl lactate was synthesized from lactic acid and n - butyl alcohol in the presence of strongly acidic cationic exchange resin. The yield of the ester can reach 99. 3% under mole ratio of lactic acid and n - butyl alcohol was 0. 1: 0.2, the amount of strongly acidic cationic exchange resin was 0. 5 g, refluxing and water seprating for 100 min. The reusability of the catalyst was studied.%在强酸性阳离子交换树脂存在下，由乳酸和正丁醇合成了乳酸正丁酯。当乳酸和正丁醇的摩尔比为1:2，强酸性阳离子交换树脂的用量0.5 g，回流分水100min时酯收率达99.3％。同时，研究了催化剂的重复使用性能。