Development in the Green Synthesis of Cyclic Carbonate from Carbon Dioxide Using Ionic Liquids
Development in the Green Synthesis of Cyclic Carbonate from Carbon Dioxide Using Ionic Liquids
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DOI：
10.1002/chin.200544258
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发表时间：
2005-08
期刊：
影响因子：
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通讯作者：
Jianmin Sun;S. Fujita;M. Arai
中科院分区：
文献类型：
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作者：
Jianmin Sun;S. Fujita;M. Arai
摘要介绍了离子液体催化二氧化碳合成环状碳酸酯的研究进展。环状碳酸酯的合成包括三个方面：CO2与环氧化物的催化反应、CO2与环氧化物的电化学反应和烯烃的氧化羧化反应。一些离子液体是用于CO2固定以产生环状碳酸酯的合适的催化剂和/或溶剂。通过添加本身没有活性或活性低的金属卤化物或金属络合物的刘易斯酸性化合物，离子液体的活性大大增强。使用离子液体进行环状碳酸酯的电化学合成可以避免传统电化学反应体系中所必需的有害有机溶剂、支持电解质和催化剂。虽然离子液体催化剂对烯烃氧化羧化反应的催化效果优于以往报道的普通催化剂，但该反应体系尚处于初步阶段。使用离子液体，合成过程将变得更加绿色和简单，因为易于产物分离和催化剂回收，并且不需要使用挥发性和有害的有机溶剂。
Abstract This brief review presents the recent development in the synthesis of cyclic carbonate from carbon dioxide (CO2) using ionic liquids as catalyst and/or reaction medium. The synthesis of cyclic carbonate includes three aspects: catalytic reaction of CO2 and epoxide, electrochemical reaction of CO2 and epoxide, and oxidative carboxylation of olefin. Some ionic liquids are suitable catalysts and/or solvents to the CO2 fixation to produce cyclic carbonate. The activity of ionic liquid is greatly enhanced by the addition of Lewis acidic compounds of metal halides or metal complexes that have no or low activity by themselves. Using ionic liquids for the electrochemical synthesis of the cyclic carbonate can avoid harmful organic solvents, supporting electrolytes and catalysts, which are necessary for conventional electrochemical reaction systems. Although the ionic liquid is better for the oxidative carboxylation of olefin than the ordinary catalysts reported previously, this reaction system is at a preliminary stage. Using the ionic liquids, the synthesis process will become greener and simpler because of easy product separation and catalyst recycling and unnecessary use of volatile and harmful organic solvents.