【摘要】 在水合硫酸氢钠存在下 ,由马来酸酐与正丁醇合成马来酸二丁酯 .当马来酸酐、正丁醇和硫酸氢钠的摩尔比为 1∶6∶0 .145 ,回流分水 90min ,酯收率达 93.4% ,催化剂重复使用 5次 ,活性未发生下降 .并比较了一些硫酸盐的催化活性更多还原

【Abstract】 Dibutyl maleate is synthesized from maleic anhydride and n butyl alcohol in the presence of sodium bisulfate hydrate(NaHSO 4·H 2O). The yield of the ester can reach 93.4% when mole ratio of maleic anhydride, n-butyl alcohol and sodium bisulfate is 1:6:0.145, and refluxing and water segrating is 90 min. The catalyst can be reused for more than five times without any loss of activity. The catalytic activities of some sulfates in synthesis of butyl maleateare are also compared.更多还原