新型催化剂催化合成顺丁烯二酸二丁酯  

Catalytic Synthesis Of Dibutyl Maleate by New Catalysis

作　　者：张翔宇[1] 米国定[1] 余光明[1] 王振军[1] 

机构地区：[1]许昌学院化学系,河南许昌461000

出　　处：《许昌学院学报》2007年第2期118-120,共3页Journal of Xuchang University

基　　金：河南省科技厅自然科学基金(0511020500);河南省教育厅自然科学基金(200510480008)

摘　　要：通过La2(SO4)3/SiO2催化合成马来酸二丁酯的研究,探讨了该反应的各种影响因素,结果表明:La2(SO4)3/SiO2是合成马来酸二丁酯的良好催化剂.该酯合成的最佳条件是:酐醇物质的量比为1∶2.5,催化剂为0.8g/0.1mol马来酐,带水剂苯为8mL,反应时间为100min,反应温度在115℃左右,酯化率可达99.03%.将上述最佳条件用于邻苯二甲酸二辛酯、丁二酸二丁酯和柠檬酸三丁酯的合成,其酯化率也都在97%以上.La2 （SO4 ）3/SiO2 were prepared and as catalyst for synthesizing dilutyl maleate from maleic anhydride and n - butanol was studied. The different factors of the reaction were discussed in detail. The experimental results indicated that La2 （ SO4） 3/SIO2 was an efficient catalyst for synthesizing dibutyl maleate. The optimized reaction condition was as follows ： molar ratio of maleic anhydride to n - butanol was 1：2.5 ; amount of catalyst was 0.8 g/0. 1 mol maleic anhydride; water- carrying agent benzene volume was 8mL, the reaction time was 100 min; the reaction temperature was controlled at 115℃ ; the dibutylmaleate＇ s yield was able to reach 99.03%. The above optimized condition was also applied to synthesized of di-n-octyl phthalate, dibutylsuccinate and tri-n-butyl citrate. Their yield can reach over 97%.

关 键 词：马来酸二丁酯 催化合成 硅胶负载硫酸镧 增塑剂 

分 类 号：TQ245.212[化学工程—有机化工]