摘要
研究了以固体超强酸SO2 -4 /TiO2 /La3+为催化剂 ,马来酸和异戊醇为原料合成马来酸二异戊酯 ,并考察了影响反应的因素。结果表明 ,醇酸摩尔比为 4.0∶1,催化剂用量为 1.0 g(在马来酸用量为 0 .1mol的情况下 ) ,带水剂甲苯为 15mL ,反应时间为 3 .0h是最适宜的反应条件 ,酯化率达 98.2 %。
The synthesis of diisopentyl maleate with isopentanol and maleic acid as reactants and rare earth solid superacid SO 2- 4/TiO 2/La 3+ as catalyst has been studied.The influent factors of reaction were investigated.When 0.1 mol of maleic acid was used the optimized conditions are:weight of catalyst is 1.0 g;molar ratio of isopentanol to maleic acid is 4.0∶1; reaction time is 3.0 h;the water removing reagent toluene is 15 mL.The yield of diisopentyl maleate is about 98.2%.
出处
《化学试剂》
CAS
CSCD
2000年第6期335-336,338,共3页
Chemical Reagents
基金
河北省自然科学基金资助项目! (编号2 95 10 8)
关键词
稀土固体超强酸
马来酸二异戊酯
催化合成
rare earth solid superacid
diisopentyl male ate
catalysis
synthesis
