Mesoporous poly(ionic liquid)s with dual active sites for highly efficient CO_(2)conversion  

作　　者：Yawen Fu Yanan Xu Zepeng Zeng Abdul-Rauf Ibrahim Jin Yang Shuliang Yang Yaqiang Xie Yanzhen Hong Yuzhong Su Hongtao Wang Yanliang Wang Li Peng Jun Li Wendy L.Queen 

机构地区：[1]College of Chemistry and Chemical Engineering,Xiamen University,Xiamen,361005,China [2]Mechanical Engineering Department,Tamale Technical University,Tamale,Ghana [3]College of Energy,Xiamen University,Xiamen,361102,China [4]National Engineering Laboratory for Green Chemical Productions of Alcohols,Ethers and Esters,Xiamen University,Xiamen,361005,China [5]Collaborative Innovation Center of Chemistry for Energy Materials,Xiamen,361005,China [6]Institute of Chemical Sciences and Engineering,Ecole Polytechnique Federale de Lausanne(EPFL),EPFL-ISIC-Valais,Sion,Switzerland

出　　处：《Green Energy & Environment》2023年第2期478-486,共9页绿色能源与环境（英文版）

基　　金：financial support from the National Natural Science Foundation of China(22078274,21903066)。

摘　　要：Atmospheric CO_(2)concentrations are soaring due to the continued use of fossil fuels in energy production,an anthropogenic activity that is playing a leading role in global warming.Thus,research aimed at the capture and conversion of CO_(2)into value-added products,such as cyclic carbonates,is booming.While CO_(2)is an abundant,cheap,non-toxic,and readily accessible Cl feedstock,its thermodynamic stability necessitates the development of highly efficient catalysts that are able to promote chemical reactions under mild conditions.In this work,a novel mesoporous poly(ionic liquid)with dual active sites was synthesized through a facile method that involves co-polymerization,post-synthetic metalation,and supercritical CO_(2)drying.Due to a high density of nucleophilic and electrophilic sites,the as-prepared poly(ionic liquid),denoted as P2D-4BrBQA-Zn,offers excellent performance in a CO_(2)cycloaddition reaction using epichlorohydrin as the substrate(98.9%conversion and 96.9%selectivity).Moreover the reaction is carried out under mild,solvent-free,and additive-free conditions.Notably,P2D-4BrBQA-Zn also efficiently promotes the conversion of various other epoxide substrates into cyclic carbonates.Overall,the catalyst is found to have excellent substrate compatibility,stability,and recyclability.

关 键 词：Mesoporous poly(ionic liquid) Nucleophile/electrophilic sites Carbon dioxide cycloaddition Heterogeneous catalysis Supercritical CO_(2)drying 

分 类 号：X701[环境科学与工程—环境工程]