新型防腐剂富马酸单环己酯的合成

摘要

Using maleic anhydride and cyclohexanol as raw material and solid super acid SO4^2-/SnO2-CeO2 as esterification and isomerization catalyst, mono-cyclohexyl fumarate was synthesized by one step process. The products were confirmed by GC-MS and FTIR spectrum. The optimum conditions obtained by orthogonal experiments are as follows： reaction temperature 100 ℃ , reaction time 5 h, catalysts dosage 2.5 g, n （cyclohexanol） ： m （ maieic anhydride） = 1.5 ： 1, the yield of mono-cyclohexyl fumarate was 57.65 %.%以马来酸酐、环己醇为原料，固体超强酸SO4^2-／SnO2-CeO2为催化剂，一步完成酯化异构化合成富马酸单环己酯。采用FTIR和GC—MS对产品进行了表征分析。通过正交实验设计得出反应的适宜工艺条件：反血温度100℃，反应时间5h，催化剂用量2．5g（以0．1mol马来酸酐为基数），醇酸摩尔比为1．5：1，在此条件下富马酸单环己酯产率为57．65％。