固体酸S_2O_8~(2-)/Fe_2O_3-SiO_2催化合成乙酸丁酯的研究

本文研究了以S2 O82 -/Fe2 O3 -SiO2 固体酸为催化剂 ,以乙酸、丁醇为原料合成乙酸丁酯 ,考察了影响反应的因素 ,结果表明最佳工艺条件是 :固体酸催化剂前驱体经微波陈化处理 ,醇酸摩尔比为1.2∶1,催化剂用量为 0 .8g(乙酸用量为 0 .2mol的情况下 ) ,带水剂为 10mL ,反应时间为 3.0h ,酯化可达到97.7% ,可重复利用 6次以上

Study on the catalytic synthesis of butyl acteate by the solid acid S_2O_8~(2-)/Fe_2O_3-SiO_2

The synthesis of butyl acetate with n -butanol and acetic acid as reactants and solid acid S2O 2- 8/Fe 2O 3-SiO 2 as catalyst had been studied ,The influence factors of raction were investigated by experiments. The results showed that the optimum conditions were as follows:precursor of solid catalyst was treated by microwave;molar ratio of n -butanol to acetic acid was 1.2:1;weight of catalyst was 0.8g (weighe of acetic acid if 0.2mol ); raction times was 3h; the taking water reagent( cyclohexane) was 10mL; the easterification yield of butyl acetate was 97.7%. The catalyst can be reused over 6.