磷钼钒杂多酸催化合成乙酸正丁酯的研究

Studies on Catalytic Synthesis of n-Butyl Acetate Using Phosphomolybdate Vanadium Heteropolyacid

研究了以乙酸和正丁醇为原料，磷钼钒杂多酸为催化剂合成乙酸正丁酯的反应，考察了原料醇酸物质的量比、反应时间、反应温度、催化剂用量等因素对酯化反应的影响，经过试验确定了合成乙酸正丁酯的较佳工艺条件，醇酸物质的量比为1．2：1，磷钼钒杂多酸催化剂用量为反应液总量的0．6％，反应时间为85min，反应温度为115℃，在此条件下，乙酸正丁酯的收率为93％-95％。

Sythesis of n - Butyl acetate by esterification of n - buthanol and acetic acid as starting materials in the presence of Phosphomolybdate vanadium heteropolyacid catalyst was proposed. The reaction conditions, such as acid - alcohol ratio, reaction temperature and time, amount of catalysts were examined. The optimum reaction conditions were as follows： the molar ratio of alcohol to acid were 1.2： 1, weight of heteropolyacid was 0.6% of total weight, reaction time was 85min, reaction temperature was 115℃. Under the optimum conditions, the yield was about 93% - 95%.