文献类型：期刊文献

英文题名：Oxalamide-derived ionic polymer/carbon nanotube composites: Highly active heterogeneous catalyst for promoting cycloaddition of carbon dioxide to epoxides

作者：Zha, Wenye Chen, Ying Wang, Hu Chen, Weifeng Lei, Yi-Zhu Wan, Ya-Li Zhong, Shenglai

第一作者：Zha, Wenye

通信作者：Lei, YZ[1];Wan, YL[2]

机构：[1]Dalian Univ, Coll Environm & Chem Engn, Dalian 116622, Peoples R China;[2]Liupanshui Normal Univ, Sch Chem & Mat Engn, Guizhou Prov Key Lab Coal Clean Utilizat, Liupanshui 553004, Guizhou, Peoples R China;[3]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550025, Peoples R China;[4]Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China

第一机构：Dalian Univ, Coll Environm & Chem Engn, Dalian 116622, Peoples R China

通信机构：corresponding author), Liupanshui Normal Univ, Sch Chem & Mat Engn, Guizhou Prov Key Lab Coal Clean Utilizat, Liupanshui 553004, Guizhou, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Chem Engn, Guiyang 550025, Peoples R China.|贵州理工学院化学工程学院;贵州理工学院;

年份：2025

卷号：92

外文期刊名：JOURNAL OF CO2 UTILIZATION

收录：;EI(收录号：20250417737030);WOS:【SCI-EXPANDED(收录号:WOS:001414511400001)】；

基金：The National Natural Science Foundation of China (Grant No. 22162017), the Natural Science Foundation of Guizhou Province (Grant No. Qiankehejichu-ZK[2024]zhongdian090), the Program for High-level Innovative Talents in Guizhou Province (Grant No. GCC[2023]049), the State Key Laboratory of Materials-Oriented Chemical Engineering (Grant No. KL-MCE-22B01), Natural Science Foundation of Liupanshui (Grant No. 52020-2023-0-2-9), and the Foundation of Liupanshui Normal University (LPSSY2023KJZDPY01) have kindly provided financial support for this research project.

语种：英文

外文关键词：CO 2 fixation; Oxalamide; Composite catalyst; Ionic polymer; Mechanochemical method

摘要：Ionic polymers functionalized with hydrogen bond donors (HBDs) exhibit immense potential in the green chemical fixation of carbon dioxide (CO2); however, achieving high catalytic activity remains a significant challenge. In this study, we synthesized oxalamide-based ionic polymers and their composites with carbon nanotubes using a straightforward ball-milling method. The incorporation of oxalamide notably enhanced the catalytic activity of the ionic polymers by activating the C-O bond of the epoxide via HBD interaction. Furthermore, compositing with carbon nanotubes enhanced the catalytic performance of the composite materials via improving the accessibility of active sites. As a result, the optimized composite catalyst, P(PyOA-BBr3)@CNT3, demonstrated exceptional catalytic efficiency in the cycloaddition reaction between CO2 and epichlorohydrin, achieving an outstanding initial turnover frequency (TOF) of 1360 h- 1 and a 68 % yield of epichlorohydrin carbonate at 140 degrees C. This makes our solid organocatalyst one of the most efficient metal-free solid catalytic systems reported to date. Moreover, P(PyOA-BBr3)@CNT-3 exhibited good substrate compatibility and could be easily recycled and used for at least six cycles. This study not only introduces an efficient HBD for designing bifunctional catalysts, but also presents a feasible and environmentally friendly approach for constructing highly active ionic polymer-based composite catalysts for CO2 fixation.