强酸性阳离子交换树脂催化合成马来酸双丁酯

Synthesis of Dibutyl Maleate by Using Strong Acid Cation Exchange Resin as Catalyst

利用强酸性阳离子交换树脂催化马来酸酐和正丁醇制备马来酸双丁酯，当马来酸酐与正丁醇的摩尔比为 ０１∶０６，树脂用量 １２５ ｇ，反应温度 １２０～１２４ ℃，反应时间 １４０ ｍ ｉｎ 时，酯收率大于 ９０ ％ 。

Dibutyl maleate was prepared from maleic anhydride and n-butyl alcohol in the presence of strong acid cation exchange resin.When molar ratio of maleic anhydride/n-butyl alcohol was 0.1∶0.6,the amount of resin was 1.25g,reaction temperature was 120~124℃,reaction time was 140 min,the yield of dibutyl maleate was over 90%.