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An efficient and stable Cu/SiO2 catalyst for the syntheses of ethylene glycol and methanol via chemoselective hydrogenation of ethylene carbonate
Liu, Jiaju1,3; He, Peng1; Wang, Liguo1,2,4; Liu, Hui3; Cao, Yan1; Li, Huiquan1,4
2018-08-01
Source PublicationCHINESE JOURNAL OF CATALYSIS
ISSN0253-9837
Volume39Issue:8Pages:1283-1293
Abstract

The efficient synthesis of methanol and ethylene glycol via the chemoselective hydrogenation of ethylene carbonate (EC) is important for the sustainable utilization of CO2 to produce commodity chemicals and fuels. In this work, a series of P-cyclodextrin-modified Cu/SiO2 catalysts were prepared by ammonia evaporation method for the selective hydrogenation of EC to co-produce methanol and ethylene glycol. The structure and physicochemical properties of the catalysts were characterized in detail by N-2 physisorption, XRD, N2O titration, H-2-TPR, TEM, and XPS/XAES. Compared with the unmodified 25Cu/SiO2 catalyst, the involvement of beta-cyclodextrin in 5 beta-25Cu/SiO2 could remarkably increase the catalytic activity-excellent activity of 1178 mg(Ec) g(cat) h(-1) with 98.8% ethylene glycol selectivity, and 71.6% methanol selectivity could be achieved at 453 K. The remarkably improved recyclability was primarily attributed to the remaining proportion of Cu+/(Cu-0+Cu+). Furthermore, the DFT calculation results demonstrated that metallic Cu dissociated adsorbed Hz, while Cu' activated the carbonyl group of EC and stabilized the intermediates. This study is a facile and efficient method to prepare highly dispersed Cu catalysts this is also an effective and stable heterogeneous catalyst system for the sustainable synthesis of ethylene glycol and methanol via indirect chemical utilization of CO2. (C) 2018, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

KeywordEthylene Carbonate Hydrogenation Beta-cyclodextrin Cu/sio2 Methanol Ethylene Glycol
DOI10.1016/S1872-2067(18)63032-3
Language英语
WOS KeywordDimethyl Oxalate ; Co2 Hydrogenation ; Heterogeneous Hydrogenation ; Selective Hydrogenation ; Structural Evolution ; Cyclic Carbonates ; Performance ; Ethanol ; Molecules ; Economy
Funding ProjectNational Natural Science Foundation of China[21576272] ; National Natural Science Foundation of China[21406245] ; Jiangsu Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipments[YCXT201607]
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Jiangsu Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipments
WOS IDWOS:000441480500003
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/25401
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Liguo; Li, Huiquan
Affiliation1.Chinese Acad Sci, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Yancheng Inst Technol, Jiangsu Collaborat Innovat Ctr Ecol Bldg Mat & En, Key Lab Adv Technol Environm Protect Jiangsu Prov, Yancheng 224051, Jiangsu, Peoples R China
3.Beijing Univ Chem Technol, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Jiaju,He, Peng,Wang, Liguo,et al. An efficient and stable Cu/SiO2 catalyst for the syntheses of ethylene glycol and methanol via chemoselective hydrogenation of ethylene carbonate[J]. CHINESE JOURNAL OF CATALYSIS,2018,39(8):1283-1293.
APA Liu, Jiaju,He, Peng,Wang, Liguo,Liu, Hui,Cao, Yan,&Li, Huiquan.(2018).An efficient and stable Cu/SiO2 catalyst for the syntheses of ethylene glycol and methanol via chemoselective hydrogenation of ethylene carbonate.CHINESE JOURNAL OF CATALYSIS,39(8),1283-1293.
MLA Liu, Jiaju,et al."An efficient and stable Cu/SiO2 catalyst for the syntheses of ethylene glycol and methanol via chemoselective hydrogenation of ethylene carbonate".CHINESE JOURNAL OF CATALYSIS 39.8(2018):1283-1293.
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