Design of high surface area poly(ionic liquid)s to convert carbon dioxide into ethylene carbonate
Design of high surface area poly(ionic liquid)s to convert carbon dioxide into ethylene carbonate
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DOI：
10.1039/c5ta00272a
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发表时间：
2015-04
影响因子：
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通讯作者：
A. Dani;E. Groppo;C. Barolo;J. Vitillo;S. Bordiga
中科院分区：
文献类型：
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作者：
A. Dani;E. Groppo;C. Barolo;J. Vitillo;S. Bordiga
采用一种新颖的方法合成了一系列多孔聚离子液体S(PILS)，该方法包括合成二乙烯基苯和乙烯基咪唑等非离子共聚物，然后通过烷基化步骤在聚合物基质中引入离子液体的官能团。这种合成策略使我们能够获得同时具有高比表面积和暴露的离子部分的可调的咪唑型PIL。通过系统地改变烷基链、阴离子和交联度，得到了一组PILS。这种方法使我们能够阐明每个合成变量对PILS在非常温和的条件下(室温和低压)催化二氧化碳环加成反应性能的影响。最后，原位FTIR光谱使我们能够建立PILS的结构和它们的催化性能之间的关系。
A series of porous poly(ionic liquid)s (PILs) were synthesized using an innovative method which involves the synthesis of non-ionic co-polymers such as divinylbenzene and vinylimidazole, followed by an alkylation step to introduce the ionic liquid functionality in the polymeric matrix. This synthetic strategy allowed us to obtain tunable imidazolium type PILs having simultaneously high surface area and exposed ionic moieties. A set of PILs was obtained by changing systematically the alkyl chains, the anions and the cross-linking degree. This approach allowed us to elucidate the effect of each synthetic variable on the catalytic performances of PILs towards the carbon dioxide cycloaddition reaction under very mild conditions (room temperature and low pressure). Finally, in situ FTIR spectroscopy allowed us to establish a relationship between the structure of PILs and their catalytic properties.