SiO_2负载纳米级SO_4^(2-)/TiO_2固体超强酸催化合成对羟基苯甲酸丁酯  

Catalytic Synthesis of n-butyl p-hydroxy Benzoate with SiO_2 Supported Nano-sized SO_4^(2-)/TiO_2 Solid Superacid

作　　者：刘占荣[1] 刘树彬[1] 张萍[1] 次立杰[1] 张东红[1] 

机构地区：[1]石家庄学院化工学院,河北石家庄050035

出　　处：《河北师范大学学报（自然科学版）》2010年第5期565-568,共4页Journal of Hebei Normal University：Natural Science

基　　金：河北省科技支撑计划项目(09215133)

摘　　要：以对羟基苯甲酸和正丁醇为原料,SiO2负载纳米级SO42-/TiO2固体超强酸为催化剂催化合成对羟基苯甲酸丁酯,研究了对羟基苯甲酸丁酯的合成条件和催化剂的重复使用效果.实验结果显示:SiO2负载纳米级SO42-/TiO2固体超强酸是合成对羟基苯甲酸丁酯的良好催化剂,在最佳反应条件下,对羟基苯甲酸的转化率为98.6%,催化剂重复使用6次后,对羟基苯甲酸的转化率仍可达90.8%.The n-butyl p-hydroxy benzoate was synthesized with p-hydroxy benzoic acid and n-butanol,with SiO2 supported nano-sized SO42/TiO2 solid superacid as catalysts.The esterification conditions and effect on repeated use of the catalyst were studied.Experimental result showed that it was an excellent catalyst for the synthesis of n-butyl p-hydroxy benzoate.Under optimum synthesis condition,the conversion rate of p-hydroxy benzoic acid was 98.6 %,after the catalyst was used repeatedly for six times,the conversion rate of p-hydroxy benzoic acid was still up to 90.8 %.

关 键 词：纳米级SO4^2-/TIO2 固体超强酸 催化 对羟基苯甲酸丁酯 

分 类 号：O643.36[理学—物理化学]