杂多酸(盐)催化合成丙烯酸正丁酯的研究

Synthesis of Butyl Acrylate Catalyzed by Heteropoly Acids (Salts)

对杂多酸（ 盐） 均相、非均相和固载型催化剂催化丙烯酸和正丁醇反应合成丙烯酸正丁酯进行了研究。实验结果表明：丙烯酸０－５ｍｏｌ、正丁醇０－５５ｍｏｌ、催化剂用量为丙烯酸质量的１－２％ 、反应温度为１３０℃时，丙烯酸的转化率和酯化反应的选择性都在９６％ 以上。非均相和固载型杂多酸（ 盐） 催化剂均可多次使用而活性没有明显下降。

Heteropoly acids(salts) catalyzed esterification between acrylic acid and n butyl alcohol was studied.A number of homogeneous,heterogeneous and supported catalysts with high activity and selectivity were selected.The effects of reaction conditions on the results were investigated.Under the following conditions:acrylic acid 0.5mol,n butyl alcohol 0 55mol,catalyst 1 2%(w),reaction temperature 130℃,the conversion of the acrylic acid was over 96%,the selectivity for butyl acrylate was over 96%.The heterogeneous and supported catalysts could be used for several times without distinct decrease in activity.