马来酸二丁酯催化合成用新型催化剂的研究  

Research on New Catalysts of Esterification for Synthesis of Di-n-butyl Maleate

作　　者：陈明扬[1] 储伟[1] 黄成宏[1] 张云[1] 

机构地区：[1]四川大学化工学院,成都610065

出　　处：《天然气化工—C1化学与化工》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 )

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 liquidphase esterification to synthesize dinbutyl maleate is typically acidcatalyzed reaction In this work the γAl2O3 and SiO2/Al2O3 catalysts were prepared for the reaction of liquidphase esterification of maleic acid to synthesize dinbutyl maleate The experimental results indicated that the catalyst SiO2/Al2O3 which was made by coprecipitation (Si/Al=1/1, the precipitation pH=60) has the highest efficiency At the temperature of 120℃, mass of catalyst 10g (based on 01 mole maleic acid) and n(maleic acid):n(nbutanol)=1:4, the conversion of maleic acid reached at 7331% after 3 hours reaction 

关 键 词：马来酸二丁酯 催化剂制备 液相法 酯收率 反应工艺 

分 类 号：TQ225.24[化学工程—有机化工]