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The efficient synthesis of diethyl carbonate via coupling reaction from propylene oxide, CO2 and ethanol over binary PVEImBr/MgO catalyst
Wang, Liguo1; Ammar, Muhammad1,2; He, Peng1; Li, Yuqian1; Cao, Yan1; Li, Fengjiao1,2; Han, Xiao1; Li, Huiquan1,3
2017-03-01
Source PublicationCATALYSIS TODAY
ISSN0920-5861
Volume281Pages:360-370
Abstract

Direct synthesis of diethyl carbonate (DEC) from propylene oxide, CO2 and ethanol via coupling reaction over a heterogeneous catalyst was demonstrated. In this work, a cross linked poly(ionic liquid) containing poly(1-vinyl-3-ethylimidazolium bromide)(PVEImBr) moiety was prepared via a free radical polymerization. Meanwhile, the MgO nanoplatelet with abundant basic sites was prepared, which was combined with PVEImBr to form a composite catalyst of PVEImBr/MgO center dot N-2 physisorption, TG, XRD, SEM, CO2-TPD and FT-IR were conducted to thoroughly characterize the structure and texture of the catalysts. The as prepared heterogeneous catalyst, which simultaneously possessed the dual function of nucleophilicity and basicity, was used in the coupling reaction of propylene oxide, CO2 and ethanol to synthesize diethyl carbonate and propylene glycol. The composite catalyst could promote the reaction with high efficiency, and a good catalytic performance of 54.4% diethyl carbonate yield and 59.8% propylene glycol yield could be achieved. The H-1 NMR and DFT calculation disclosed that greatly faster reaction rate was ascribed to the synergistic effect between the Br circle dot anion of PVEImBr and hydroxyl group of ethanol. Accordingly, a mechanism of the sequential reaction consisting of cycloaddition and transesterification steps was proposed. (C) 2016 Elsevier B.V. All rights reserved.

KeywordCarbon Dioxide Diethyl Carbonate Coupling Reaction Binary Mechanism
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.cattod.2016.02.052
Indexed BySCI
Language英语
WOS KeywordFunctionalized Ionic Liquid ; Dimethyl Carbonate ; Cyclic Carbonates ; Polyatomic-molecules ; Polyethylene-glycol ; Nanocrystalline Mgo ; Assisted Synthesis ; Transition-states ; Magnesium-oxide ; Al hydrotAlcite
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000390623300016
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21857
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Liguo,Ammar, Muhammad,He, Peng,et al. The efficient synthesis of diethyl carbonate via coupling reaction from propylene oxide, CO2 and ethanol over binary PVEImBr/MgO catalyst[J]. CATALYSIS TODAY,2017,281:360-370.
APA Wang, Liguo.,Ammar, Muhammad.,He, Peng.,Li, Yuqian.,Cao, Yan.,...&Li, Huiquan.(2017).The efficient synthesis of diethyl carbonate via coupling reaction from propylene oxide, CO2 and ethanol over binary PVEImBr/MgO catalyst.CATALYSIS TODAY,281,360-370.
MLA Wang, Liguo,et al."The efficient synthesis of diethyl carbonate via coupling reaction from propylene oxide, CO2 and ethanol over binary PVEImBr/MgO catalyst".CATALYSIS TODAY 281(2017):360-370.
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