文献类型：期刊文献

英文题名：Carboxymethyl cellulose supported ionic liquid as a heterogeneous catalyst for the cycloaddition of CO2 to cyclic carbonate

作者：Wu, Xiaohui[1];Wang, Mengpan[1];Xie, Yinzheng[1];Chen, Chen[1];Li, Kun[1];Yuan, Mingming[1];Zhao, Xiuge[1];Hou, Zhenshan[1,2]

机构：[1]E China Univ Sci & Technol, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Xinjiang Inst Engn, Dept Chem & Environm Engn, Urumqi 830011, Peoples R China

年份：2016

卷号：519

起止页码：146

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：;EI(收录号：20161602259045);WOS:【SCI-EXPANDED(收录号:WOS:000376700400016)】；

基金：The authors are grateful for support from the National Natural Science Foundation of China (21373082) and innovation Program of Shanghai Municipal Education Commission (15ZZ031), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Carboxymethyl cellulose; Ionic liquid; Heterogeneous catalysts; CO2; Cyclic carbonate

摘要：The non-toxic biologic material carboxymethyl cellulose (CMC) supported imidazolium-based ionic liquids (ILs), coupling with a series of Lewis acids has been prepared and used as heterogeneous catalysts for the cycloaddition of CO2 to cyclic carbonate. The as-synthesized catalysts have been characterized by FT-IR, XRD, TGA, SEM etc. Especially, the protonated CMC (HCMC) supporting both the hydroxyl group functionalized IL (1-hydroxypropyl-3-n-butylimidazolium chloride, HBimCl) and NbCl5 (HBimCl-NbCl5/HCMC) exhibited the best catalytic performance. It was indicated that HBimClon HBimCl-NbCl5/HCMC catalyst was highly leaching-resistant even if it was immobilized through non-covalent interaction. The IL and Lewis acid exhibited strong synergistic effects for the cycloaddition reaction. Additionally, the HBimCl-NbCl5/HCMC catalyst exhibited a high activity and excellent selectivity for a wide scope of substrates under optimum conditions and also it was further extended to application in the continuous fixed-bed flow reactor and showed an excellent catalytic stability. No loss of catalytic activity was observed even after 120 h on stream. (C) 2016 Elsevier B.V. All rights reserved.