环氧乙烷催化水合制备乙二醇的研究进展  

Advances in Preparation of Ethylene Glycol via Catalytic Hydration of Ethylene Oxide

作　　者：杨志剑[1] 任楠[1] 唐颐[1] 

机构地区：[1]复旦大学化学系上海市分子催化与创新材料重点实验室,上海200433

出　　处：《石油化工》2010年第5期562-569,共8页Petrochemical Technology

基　　金：国家重点基础研究发展计划项目(2009CB623506);上海市科委项目(上海市分子催化和功能材料重点实验室)项目(075211013;08DZ2270500)

摘　　要：对当前应用于环氧乙烷催化水合(包括均相和非均相催化水合法)制备乙二醇反应的主要催化体系进行了比较和分析,同时阐述了相关的催化作用机理。讨论了目前各催化水合体系所存在的问题以及未来的发展方向,均相催化剂如水溶性无机盐等,其核心问题在于对设备的腐蚀以及在产物精馏过程中析出导致危险等问题的控制;而非均相催化剂如阴离子交换树脂、负载型金属氧化物等,可实现连续生产并且易分离,研究重点在于乙二醇选择性的提高以及催化剂成本的降低和使用寿命的延长。对当前我国乙二醇合成工艺的重要新进展,如以纤维素、煤代替石油资源为原料制备乙二醇等进行了简要介绍。The latest advances in the synthesis of ethylene glycol via catalytic hydration of ethylene oxide with the homogeneous and heterogeneous catalyst systems were reviewed. The reaction mechanisms of different catalysts reported were expatiated and summarized. Problems caused by homogeneous catalyst were focused, such as the avoidance of equipment corrosion and catalyst precipitation during the distillation process. Heterogeneous catalysts made continuous production, such as anion exchange resin and supported metal oxides, and the research focused on the exploitation of the catalysts with high selectivity, low cost and long lifetime. The new developments for ethylene glycol preparation in China were introduced. Cellulose and coal can be used as new raw materials instead of petroleum.

关 键 词：环氧乙烷 乙二醇 催化水合 无机盐 阴离子交换树脂 金属氧化物 

分 类 号：TQ223.162[化学工程—有机化工]