纳米级SO_4^(2-)/TiO_2固体超强酸催化合成乙酸丁酯

Catalytic synthesis of n-Buty1 Acetate withnamometer-size SO_4^(2-)/TiO_2 solid superacid

研究了以纳米级二氧化钛制备的纳米级SO42 -/TiO2 固体超强酸为催化剂 ,冰醋酸和丁醇为原料合成乙酸丁酯 ,考察了影响反应的因素。结果表明 ,醇酸比为 1 .2 2∶1 ,催化剂用量为0 .1 5g(冰醋酸为 0 .0 9mol的情况下 ) ,反应时间为 3 .0小时是最适宜的反应条件 ,冰醋酸转化率为98.8%。

Synthesis of n-Buty1 Acetate with namometer-size SO 2- 4/TiO 2 solid superacid as catalyst was studied.The results show that the appropriate conditions are:weight of catalyst 0.15g(weight of acetic,0.09mol);molar ratio of n-butanol to acetic,1.22∶1;reaction time 3.0h;yield,about 98.8%.