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Chemcial Industry and Engineering 2024, Vol. 41 Issue (2) :2-11    DOI: 10.13353/j.issn.1004.9533.20220353
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Cycloaddition of CO2 with epoxides catalyzed by multi-site ionic liquid based hyper-crosslinked polymer
WANG Hao, YUE Chengguang, WANG Meiyan, MA Xinbin
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract Cycloaddition of CO2 with epoxides to prepare cyclic carbonates is a green and economic pathway for CO2 utilization. Given the problems of low activity and easy-leaching of active components of heterogeneous ionic liquid catalysts, a series of multi-site ionic liquid based hyper-crosslinked polymers were prepared. The synergism effect of various active site as well as composition and structure of the polymers on the catalytic performance of cycloaddition of CO2 with epoxides were investigated. The as-prepared catalyst of ionic liquid hyper-crosslinked polymer HCP-[DmPhe]Br-DCX, which contains structures of quaterny ammonium cation-halogen anion pair, hydroxyl and tertiary amine, can achieve 94% yield of butenyl carbonate under 1.3 MPa at 130 ℃ for 8 h. The HCP-[DmPhe]Br-DCX also shows good stability because its catalytic activity was not decreased when being reused for 5 times. In addition, the porous structure and large specific surface area of the ionic liquid based hyper-crosslinked polymer promote the good dispersion of the ionic liquid, which makes the HCP-[DmPhe]Br-DCX has similar activity as ionic liquid monomer [DmPhe]Br. This work provides a strategy for the development and optimization of high efficiency catalysts for the cycloaddition of CO2 with epoxide.
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WANG Hao
YUE Chengguang
WANG Meiyan
MA Xinbin
KeywordsCO2 utilization   cyclic carbonate   ionic liquid   synergistic effect   hyper-crosslinking polymerization     
Received 2022-06-23;
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WANG Hao, YUE Chengguang, WANG Meiyan, MA Xinbin.Cycloaddition of CO2 with epoxides catalyzed by multi-site ionic liquid based hyper-crosslinked polymer[J]  Chemcial Industry and Engineering, 2024,V41(2): 2-11
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