Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 10, Pages 9489-9497Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b00865
Keywords
Ionic liquid; Poly(ionic liquids); Carbon dioxide; Heterogeneous catalysis
Categories
Funding
- National Key R&D Program of China [2017YFB0602804]
- National Natural Science Foundation of China [21878164]
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The production of carbonates from carbon dioxide (CO2) and epoxides is an atom-economical reaction. This study developed a series of poly(ionic liquids) (PILs) by copolymerizing a novel functional ionic liquid (ethyl ether bis(1-vinylimidazolium) chloride) with ethylene glycol dime thacrylate (EGDMA). The structures and morphologies of PILs were investigated by adjusting the mole ratio between IL and EGDMA in the PILs. The prepared PILs were investigated as catalysts for the cycloaddition of CO2 with epoxides, and they show improved catalytic efficiency and accelerated mass transfer rate due to their mesoporous structure with a large number of uniformly distributed active ion sites. The PIL was stable, and the activity remained unchanged during the recycling of CO2 cycloaddition to epoxides under mild conditions without any solvent and co-catalyst. This study emphasizes the PIL as a versatile platform to obtain cyclic carbonates from CO2 under mild conditions.
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