title: Porous polymers bearing functional quaternary ammonium salts as efficient solid catalysts for the fixation of CO2 into cyclic carbonates.
abstract: A series of porous polymers bearing functional quaternary ammonium salts were solvothermally synthesized through the free radical copolymerization of divinylbenzene (DVB) and functionalized quaternary ammonium salts. The obtained polymers feature highly cross-linked matrices, large surface areas, and abundant halogen anions. These polymers were evaluated as heterogeneous catalysts for the synthesis of cyclic carbonates from epoxides and CO2 in the absence of co-catalysts and solvents. The results revealed that the synergistic effect between the functional hydroxyl groups and the halide anion Br(-) afforded excellent catalytic activity to cyclic carbonates. In addition, the catalyst can be easily recovered and reused for at least five cycles without significant loss in activity.
authors.affiliation: State Key Laboratory of Coordination Chemistry, Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing, 210093, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Cai
authors.affiliation: Research and Development Centre, China Tobacco Anhui Industrial Co., Ltd., 9 Tianda Road, Hefei, Anhui, 230088, China. zhudl1980@163.com.
authors.forename: Dongliang
authors.initials: D
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Coordination Chemistry, Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing, 210093, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zou
authors.affiliation: State Key Laboratory of Coordination Chemistry, Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing, 210093, China. jingzhao@nju.edu.cn.
authors.forename: Jing
authors.identifier: http://orcid.org/0000-0001-5177-5699
authors.initials: J
authors.lastname: Zhao
keywords: CO2 fixation; Cycloaddition; Ionic polymer; Mesoporous materials; Solid catalyst