SO_4^(2-)/TiO_2/La^(3+)固体超强酸催化合成水杨酸异丙酯  

Catalytic Synthesis of Isopropyl Salicylate with SO_4^( 2-) 4/TiO_2/La^(3+) Solid Superacid

作　　者：彭安顺[1] 

机构地区：[1]临沂师范学院化学与环境工程系

出　　处：《化学工程师》2001年第1期11-12,共2页Chemical Engineer

摘　　要：以水杨酸和异丙酸为原料 ,稀土固体超强酸SO2 -4 /TiO2 /La3 + 为催化剂合成了水杨酸异丙酯 ,考察了影响反应的因素。最佳反应条件为 :醇酸比 (mol:mol)为 3 0 :1 0 ,催化剂的用量为 1 5g(水杨酸为0 1mol) ,反应时间为 3 5h ,温度为回流温度 ,酯收率可达 94 8% 。Isopropyl salicylate was synthesized with isopropyl alcohol and salicylic acid as meterials and solid superacid SO 2- _4/TiO_2/La 3+ as catalyst.The factors that had influence on the reaction were investigated.The optimum reaction conditions are as follow(for 0.1mol of salicylic acid):ratio of isopropyl alcohol to salicylic acid is 3.0mol:1.0mol,catalyst amount is 1.5g,reaction time is 3.5h and temperature is reflux temperature.The yield under the optimum con-ditions was up to 94.8% and the catalyst could be used once more.

关 键 词：稀土固体超强酸 合成 水杨酸异丙酯 水杨酸 异丙酸 

分 类 号：TQ245.24[化学工程—有机化工]