Polymer-supported Zinc Tetrahalide Catalysts for the Coupling Reactionsof CO2 and Epoxides

Bulletin of the Korean chemical society

Hoon Sik Kim¹  Nan Hee Ko¹  Je Seung Lee¹  Minserk Cheong¹  Bora Lee¹  Byoung Sung Ahn¹ 

关键词: Ionic liquids;    Zinc tetrahalide;    Ethylene carbonate;    Propylene carbonate;    Polymer-supported;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Homogeneous zinc tetrahalide complexes, highly active catalysts for the coupling reactions of alkylene oxide and CO2 produce alkylene carbonates, were heterogenized due to their tendency to decompose produced alkylene carbonates during the distillation process. Heterogenization of homogeneous zinc tetrahalide complexes was achieved by polymerizing 1-alkyl-3-vinylimidazolium zinc tetrahalides. These polymerized zinc tetrahalide catalysts displayed similar activities to their corresponding monomeric analogues for the coupling reactions of carbon dioxide with ethylene oxide (EO) or propylene oxide (PO) to produce ethylene carbonate (EC) or propylene carbonate (PC). TGA studies showed that the polymer-supported zinc tetrahalide catalysts are thermally stable up to 320 oC. The catalyst recycle test showed that the supported catalysts could be reused over six times. After removal of the polymer-supported catalyst through a simple filtration, EC was able to be isolated without decomposition.

【 授权许可】

Unknown