摘要
液相法酯化合成马来酸二丁酯是典型的酸催化反应。本论文研制了系列γ Al2O3系、硅铝系催化剂,用于马来酸二丁酯的合成;考察了催化剂种类和制备工艺,以及反应工艺条件的影响。实验结果表明:以并加法制备的SiO2/Al2O3(x(Si)/x(Al)=1/1,沉淀pH值6 0)催化效果最好,在120℃、催化剂用量为1 0g、n(酸)/n(醇)=1/4下,反应3h,马来酸转化率达73 31%。
The liquidphase esterification to synthesize dinbutyl maleate is typically acidcatalyzed reaction In this work the γAl2O3 and SiO2/Al2O3 catalysts were prepared for the reaction of liquidphase esterification of maleic acid to synthesize dinbutyl maleate The experimental results indicated that the catalyst SiO2/Al2O3 which was made by coprecipitation (Si/Al=1/1, the precipitation pH=60) has the highest efficiency At the temperature of 120℃, mass of catalyst 10g (based on 01 mole maleic acid) and n(maleic acid):n(nbutanol)=1:4, the conversion of maleic acid reached at 7331% after 3 hours reaction
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2003年第4期52-55,共4页
Natural Gas Chemical Industry
基金
国家自然科学基金(2 990 3 0 1 1 )
973国家重点子课题资助 (G1 9990 2 2 40 1 )
关键词
马来酸二丁酯
催化剂制备
液相法
酯收率
反应工艺
di-n-butyl maleate
catalyst preparation
liquid-phase reaction
ester yield
reaction parameters
