【摘要】 用丙酸和正丁醇为原料,以颗粒状活性炭固载对甲苯磺酸催化合成了丙酸丁酯。研究结果表明:活性炭固载对甲苯磺酸具有较高的催化活性。通过多次实验得出最佳反应条件为:物料配比为1:1．2(以丙酸用量0．2 mol为基准),催化剂用量为1．0 g,反应回流时间为2．0 h,反应酯化率可达 99．78％,催化剂的重复利用率较好。利用折光率、红外光谱分析等对产品进行了物性和结构表征。更多还原

【Abstract】 This paper studies the synthesis of n-butyl propionate catalyzed by p-toluenesulfonic acid supported on granular activated carbon using propionate acid and n-butanol as raw materials. The results show that the p-toluenesulfonic acid supported on activated carbon exhibits a higher activity. The optimal reaction conditions resulting from lots of experiments are as follows: the ratio of raw materials is 1:1. 2 (based on the usage of propionate as 0. 2 mol), the usage of catalyst is 1. 0 g, and the reaction time is 2. 0 h. The yield of n-butyl propionate can reach 99. 78%, and the catalyst can be used repeatedly under optimal reaction conditions. The physical properties and the structure of products are characterized by refractive index and IR.更多还原