Selective hydrogenation of ethylene carbonate to methanol and ethylene glycol over Cu/SiO2 catalysts prepared by ammonia evaporation method
Li, Fengjiao1,3; Wang, Liguo1,2; Han, Xiao1; Cao, Yan1; He, Peng1; Li, Huiquan1
2017-01-26
发表期刊INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN0360-3199
卷号42期号:4页码:2144-2156
摘要A series of Cu/SiO2-AE catalysts with different copper loadings were prepared by ammonia evaporation method with silica sol as the silica source. The systematic catalyst characterization revealed that different proportions of Cu degrees and Cu+ species co-existed in the Cu/SiO2-AE catalysts, which derived from the reduction of CuO and copper phyllosilicate, respectively. The as-prepared catalysts were employed in the hydrogenation of ethylene carbonate (EC) to co-produce methanol (MeOH) and ethylene glycol (EG). Among the catalysts investigated, the 10%Cu/SiO2-AE catalyst with a moderate copper loading exhibited better catalytic activity and product selectivities, which was mainly ascribed to the synergetic effect of Cu degrees and Cu+ species and the suitable proportion of Cu+/(Cu++Cu degrees). It was proposed that the Cu degrees species promoted the dissociation of H-2, while Cu+ species adsorbed on the carbonyl group of EC. Under the optimized conditions, EC conversion of 100%, MeOH selectivity of 70.8% and EG selectivity of 98.0% were obtained over the 10%Cu/SiO2-AE catalyst. The catalyst reusability results showed that the agglomeration of Cu and Cu2O particles was responsible for the gradually decreasing activity of 10%Cu/SiO2-AE catalyst along with recycling runs. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
关键词Hydrogenation Ethylene Carbonate Methanol Ethylene Glycol Copper Catalyst
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.ijhydene.2016.09.064
收录类别SCI
语种英语
关键词[WOS]SUPPORTED COPPER-CATALYSTS ; CO2 HYDROGENATION ; DIMETHYL OXALATE ; GLYCEROL HYDROGENOLYSIS ; CU/ZNO/AL2O3 CATALYSTS ; CYCLIC CARBONATES ; CU/HMS CATALYSTS ; GEL METHOD ; EFFICIENT ; PERFORMANCE
WOS研究方向Chemistry ; Electrochemistry ; Energy & Fuels
WOS类目Chemistry, Physical ; Electrochemistry ; Energy & Fuels
项目资助者National Natural Science Foundation of China(21576272)
WOS记录号WOS:000395842000026
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21988
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
2.Yancheng Inst Technol, Key Lab Adv Technol Environm Protect Jiangsu Prov, Jiangsu Collaborat Innovat Ctr Ecol Bldg Mat & En, Yancheng 224051, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Li, Fengjiao,Wang, Liguo,Han, Xiao,et al. Selective hydrogenation of ethylene carbonate to methanol and ethylene glycol over Cu/SiO2 catalysts prepared by ammonia evaporation method[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2017,42(4):2144-2156.
APA Li, Fengjiao,Wang, Liguo,Han, Xiao,Cao, Yan,He, Peng,&Li, Huiquan.(2017).Selective hydrogenation of ethylene carbonate to methanol and ethylene glycol over Cu/SiO2 catalysts prepared by ammonia evaporation method.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,42(4),2144-2156.
MLA Li, Fengjiao,et al."Selective hydrogenation of ethylene carbonate to methanol and ethylene glycol over Cu/SiO2 catalysts prepared by ammonia evaporation method".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 42.4(2017):2144-2156.
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