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Thiourea-Based Bifunctional Ionic Liquids as Highly Efficient Catalysts for the Cycloaddition of CO2 to Epoxides
Xu, Fei; Cheng, Weiguo; Yao, Xiaoqian; Sun, Jian; Sun, Wei; Zhang, Suojiang
2017-07-01
Source PublicationCATALYSIS LETTERS
ISSN1011-372X
Volume147Issue:7Pages:1654-1664
Abstract

A series of thiourea-based ionic liquids (TBILs) were developed as efficient catalysts for the synthesis of cyclic carbonates by the cycloaddition of CO2 with epoxides under metal-, cocatalyst- and solvent-free conditions. Different substituted groups including electron donating and withdrawing groups were introduced onto the para-position of the aromatic ring in cation of TBILs. The effect of the catalyst structures on the reaction activity was systematically investigated. Among the ionic liquids, TBIL3 with substituted OCH3 group showed the best performance with 99% propylene oxide conversion as well as 99% propylene carbonate selectivity under mild conditions (1.5 MPa, 130 A degrees C and 3 h) without any co-solvent. It was demonstrated that two secondary amine groups of the thiourea unit could dually activate the epoxides and CO2 and have a synergetic effect with the halide anion.

KeywordCo2 Utilization Ionic Liquids Cycloaddition Thiourea Hydrogen Bond Synergetic Effect
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s10562-017-2081-x
Indexed BySCI
Language英语
WOS KeywordCarbon-dioxide ; Cyclic Carbonates ; Chemical Fixation ; Bond Formation ; Metal-free ; Conversion ; Oxide ; Transformation ; Solvents ; Capture
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational Natural Science Foundation of China(21506226 ; National Key Projects for Fundamental Research and Development of China(2016YFB0600903) ; 21476245 ; 91434107)
WOS IDWOS:000403355400005
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22628
Collection多相复杂系统国家重点实验室
AffiliationChinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xu, Fei,Cheng, Weiguo,Yao, Xiaoqian,et al. Thiourea-Based Bifunctional Ionic Liquids as Highly Efficient Catalysts for the Cycloaddition of CO2 to Epoxides[J]. CATALYSIS LETTERS,2017,147(7):1654-1664.
APA Xu, Fei,Cheng, Weiguo,Yao, Xiaoqian,Sun, Jian,Sun, Wei,&Zhang, Suojiang.(2017).Thiourea-Based Bifunctional Ionic Liquids as Highly Efficient Catalysts for the Cycloaddition of CO2 to Epoxides.CATALYSIS LETTERS,147(7),1654-1664.
MLA Xu, Fei,et al."Thiourea-Based Bifunctional Ionic Liquids as Highly Efficient Catalysts for the Cycloaddition of CO2 to Epoxides".CATALYSIS LETTERS 147.7(2017):1654-1664.
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