强酸性阳离子交换树脂催化合成乳酸正丁酯

Catalytic Synthesis of N- Butyl Lactate by Strongly Acidic Cationic Exchange Resin

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 100 min时酯收率达 99. 3％。同时，研究了催化剂的重复使用性能。

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.