固体超强酸SO_4~(2-)/Fe_2O_3催化合成丙酸丙酯

利用制备的固体超强酸SO2-4/Fe2O3代替浓硫酸作催化剂,将正丙酸和正丙醇酯化合成丙酸丙酯,讨论了催化剂的制备及合成丙酸丙酯的条件。实验表明:固体超强酸不仅能减少对生产设备的腐蚀,而且具有很好的催化活性,当催化剂用量为1.0g(正丙酸为0.1mol),醇酸摩尔比为2.5∶1,回流反应3h时,酯收率可达97.2%。

Catalytic synthesis of propyl propionate with solid super acid SO~(2-)_4/Fe_2O_3

Synthesis of propel propionate from n-propyl alcohol and propane acid and solid super acid SO~(2-)_4/Fe_2O_3 as catalyst instead of sulphuric acid have been studied, the synthesis of catalyst and the condition of the synthesis of propyl propionate. The results showed that solid super acid SO~(2-)_4/Fe_2O_3 not only reduce the corrosion of the equipment. but also has good catalytic activity. The optimal conditions were (for 0.1 mol of propane acid) using 1.0 g of catalyst,the molar ratios of alcohol to acid was 2.5∶1, the reaction time was 3.0 h,the yield of esterification may up to 97.2%.