对甲苯磺酸催化合成丁酸异戊酯的工艺研究

以对甲苯磺酸为催化剂，正丁酸与异戊醇为原料合成了丁酸异戊酯，讨论了醇酸物质的量比、催化剂用量、反应时间、带水剂等因素对酯化率的影响，确定了最佳工艺条件为：以0．2mol正丁酸为基准，醇酸物质的量比为1．5：1，催化剂用量为0．5g，反应时间为2h，带水剂环己烷为7．5mL，丁酸异戊酯的酯化率为95．8％。该催化剂具有催化活性高，使用量少，酯化率高，与目前工业中使用的硫酸相比，环境污染小，对设备几乎无腐蚀等优点，且对甲苯磺酸价格低廉易得，性质稳定，使用方便，是一种很有发展前景的催化剂。

Study on Synthesis Technology of Isoamyl Butyrate Catalyzed by p-Toluene Sulphonic Acid

With using p-toluene sulphonic acid as the catalyst,isoamyl butyrate was synthesized from butyric acid and isoamyl alcohol.The effects of the catalyst amount,reaction time,water-carrying agent,molar ratio of alcohol to acid on esterification rate were discussed and the optimal reaction conditions were obtained:took 0.2 mol butyric acid as basis,the molar ratio of isoamyl alcohol to butyric acid was 1.5:1,the catalyst amount was 0.5g,the reaction time was 2h and the water-carrying agent cyclohexane was 7.5mL...