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Hydrogen production by steam reforming of dimethyl ether over ZnO-Al2O3 bi-functional catalyst
Yang, Mei1,2; Men, Yong1; Li, Shulian1; Chen, Guangwen1
关键词Dimethyl Ether H-2 Production Bi-functional Catalyst Znal2o4 Steam Reforming
刊名INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
2012-05-01
DOI10.1016/j.ijhydene.2012.02.070
37期:10页:8360-8369
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Electrochemistry ; Energy & Fuels
研究领域[WOS]Chemistry ; Electrochemistry ; Energy & Fuels
关键词[WOS]METAL-OXIDE CATALYSTS ; CU-BASED SPINEL ; METHANOL DECOMPOSITION ; COMPOSITE CATALYSTS ; ALUMINA ; COPPER ; PRECIPITATION ; HYDROLYSIS ; STABILITY ; MECHANISM
英文摘要A 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.
语种英语
WOS记录号WOS:000305040400028
引用统计
被引频次:27[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/143022
专题中国科学院大连化学物理研究所
作者单位1.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
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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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