DICP OpenIR
Hydrogen production by steam reforming of dimethyl ether over ZnO-Al2O3 bi-functional catalyst
Yang, Mei1,2; Men, Yong1; Li, Shulian1; Chen, Guangwen1
KeywordDimethyl Ether H-2 Production Bi-functional Catalyst Znal2o4 Steam Reforming
Source PublicationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
2012-05-01
DOI10.1016/j.ijhydene.2012.02.070
Volume37Issue:10Pages:8360-8369
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels
WOS KeywordMETAL-OXIDE CATALYSTS ; CU-BASED SPINEL ; METHANOL DECOMPOSITION ; COMPOSITE CATALYSTS ; ALUMINA ; COPPER ; PRECIPITATION ; HYDROLYSIS ; STABILITY ; MECHANISM
AbstractA series of ZnO-Al2O3 catalysts with various ZnO/(ZnO + Al2O3) molar ratios have been developed for hydrogen production by dimethyl ether (DME) steam reforming within microchannel reactor. The catalysts were characterized by N-2 adsorption-desorption, X-ray diffraction and temperature programmed desorption of NH3. It was found that the catalytic activity was strongly dependent on the catalyst composition. The overall DME reforming rate was maximized over the catalyst with ZnO/(ZnO + Al2O3) molar ratio of 0.4, and the highest H-2 space time yield was 315 mol h(-1).kg(cat)(-1) at 460 degrees C. A bi-functional mechanism involving catalytic active site coupling has been proposed to account for the phenomena observed. An optimized bi-functional DME reforming catalyst should accommodate the acid sites and methanol steam reforming sites with a proper balance to promote DME steam reforming, whereas all undesired reactions should be impeded without sacrificing activity. This work suggests that an appropriate catalyst composition is mandatory for preparing good-performance and inexpensive ZnO-Al2O3 catalysts for the sustainable conversion of DME into H-2-rich reformate. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Language英语
WOS IDWOS:000305040400028
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/143022
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yang, Mei,Men, Yong,Li, Shulian,et al. Hydrogen production by steam reforming of dimethyl ether over ZnO-Al2O3 bi-functional catalyst[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2012,37(10):8360-8369.
APA Yang, Mei,Men, Yong,Li, Shulian,&Chen, Guangwen.(2012).Hydrogen production by steam reforming of dimethyl ether over ZnO-Al2O3 bi-functional catalyst.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,37(10),8360-8369.
MLA Yang, Mei,et al."Hydrogen production by steam reforming of dimethyl ether over ZnO-Al2O3 bi-functional catalyst".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 37.10(2012):8360-8369.
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