烷氧基化法一步合成丙烯酸乙氧基乙酯  

Research on One Step Synthesis of 2-Ethoxyethyl Acrylate

作　　者：赵会晶[1] 朱煜[1] 王明贺[1] 李凯健 毕继辉 郭登峰[1] 

机构地区：[1]常州大学石油化工学院,江苏常州213100

出　　处：《精细化工》2015年第2期201-204,共4页Fine Chemicals

基　　金：江苏省绿色催化材料与技术重点实验室(BM2012110);国家自然科学基金(20671045)~~

摘　　要：采用镁铝固体催化剂催化环氧乙烷开环并插入丙烯酸乙酯(EA)的酯基中一步合成丙烯酸乙氧基乙酯(EEA),研究了催化剂中镁铝金属阳离子比例、催化剂焙烧温度等对催化剂活性的影响,采用SEM分析了催化剂形貌特征,经FTIR表征确认目标产物EEA结构。同时优化了烷氧基化法合成丙烯酸乙氧基乙酯的工艺条件。研究结果表明:在n(Al3+)/n(Mg2+)=0.8、焙烧温度为500℃的条件下,制备的催化剂活性最高;丙烯酸乙酯与环氧乙烷摩尔比为3∶1、反应温度130℃、催化剂用量为原料总质量1.5%的条件下,EO转化率接近70%,EEA选择性为57.59%,DEEA选择性为25.29%,TEEA选择性为11.54%。One step ethoxylation reaction catalyzed by AI-Mg composite oxide is used to synthesize 2- ethoxyethyl acrylate （EEA） by inserting ethylene oxide （ EO ） into ethyl acrylate （EA）. The influences of catalyst preparation conditions on catalyst activity have been investigated, and the process conditions have been optimized. The surface morphology of catalysts is scanned by scanning electron microscope, and the product is characterized by means of FTIR. Under the optimal catalyst preparation conditions of mole ratio of n （ Al^3 ＋ ）/n （ Mg^2 ＋ ） 0. 8 and calcinations temperature of catalyst 500℃ ; and reaction conditions of mole ratio of EA/EO 3：1 ,reaction temperature 130 ℃ ,and amount of catalyst 1.5% ,the conversion of EO is 70%, the content of EEA is 57. 59%, the content of DEEA is 25.29% , and the content of TEEA is 11.54%.

关 键 词：丙烯酸乙酯 环氧乙烷 一步烷氧基化反应 丙烯酸乙氧基乙酯 丙烯酸系列化学品 

分 类 号：TQ225.24[化学工程—有机化工]