烷氧基化法一步合成乙酸乙二醇单乙醚酯的反应研究  

Synthesis of Ethylene Glycol Monoethyl Ether Acetate by One Step Ethoxylation

作　　者：赵会晶[1] 朱煜[1] 赵文[1] 刘准 曹惠庆 郭登峰[1] 

机构地区：[1]常州大学石油化工学院,常州213100 [2]江苏怡达化学股份有限公司,无锡214400

出　　处：《化学通报》2015年第2期182-185,共4页Chemistry

基　　金：国家自然科学基金项目(20671045);江苏省高校自然科学研究重大项目(11KJA430007)资助

摘　　要：采用具备酸碱双活性位的复合金属氧化物固体催化剂,催化乙酸乙酯(EA)、环氧乙烷(EO)的羧酸酯乙氧基化反应,合成乙酸乙二醇单乙醚酯(CAC)。探索了铝镁锆、铝锌锆等7种不同类型的三金属复合氧化物对EA乙氧基化反应的影响,并研究了EA乙氧基化反应中原料配比、反应温度、催化剂用量等对EO转化率、CAC产率的影响。实验结果表明,铝镁锆复合金属氧化物催化剂具有较高的催化活性,在EA∶EO原料摩尔比为4∶1、反应温度120℃、催化剂用量为1.5(wt)%时,EO转化率为88.3%,CAC产率为43.5%,乙酸二(三)乙二醇单乙醚酯(DCAC,TCAC)产率分别为26.7%和11.4%。The ethoxylation reaction from ethyl acetate and ethylene oxide to ethylene glycol monoethyl ether acetate was researched in the presence of the acid-base bi-function catalyst. Seven different metal composite oxides including Al-Mg-Zr,Al-Zn-Zr and others were tried to catalyze the ethoxylation and the effects of manufacture process conditions,such as molar ratio,reaction temperature and the amount of catalyst,on the EO conversion and yields of CAC,DCAC,and TCAC were investigated. The Al-Mg-Zr composite oxide shows the highest catalyst activity in the ethoxylation reaction of acetate under the conditions of molar ratio of EA to EO 4∶ 1,the reaction temperature 120℃,and the amount of catalyst of 1. 5( wt) %. The conversion of EO is 88. 3%,the yield of CAC,DCAC and TCAC are43. 5%,26. 7%,and 11. 4%,respectively.

关 键 词：乙酸乙酯 环氧乙烷 羧酸酯乙氧基化反应 乙酸乙二醇单乙醚酯 

分 类 号：O623.624[理学—有机化学]