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题名: Monolithic Pt/Ce0.8Zr0.2O2/cordierite catalysts for low temperature water gas shift reaction in the real reformate
作者: Du, Xiaru1, 2;  Gao, Diannan1, 2;  Yuan, Zhongshan1;  Liu, Na1, 2;  Zhang, Chunxi1;  Wang, Shudong1
通讯作者: 王树东
关键词: monolithic catalysts ;  water gas shift reaction ;  platinum ;  Ce0.8Zr0.2O2 ;  rhenium
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2008-07-01
DOI: 10.1016/j.ijhydene.2008.04.041
卷: 33, 期:14, 页:3710-3718
收录类别: SCI
文章类型: Article
部门归属: 9
项目归属: 901
产权排名: 1;1
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
英文摘要: Monolithic catalysts were prepared by washcoating Ce0.8Zr0.2O2 slurries and then impregnating platinum or rhenium onto cordierite substrates, and characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), inductively coupled plasma (ICP), temperature-programmed-reduction (TPR) and temperature-programmed deposition of CO (CO-TPD) techniques. The effects of preparation parameters on the catalytic performance for water gas shift (WGS) reaction were investigated in details, including different Ce0.8Zr0.2O2 powder as washcoat, coat loadings, metal loadings, Pt/Re weight ratio and impregnation sequences. In addition, pyrophoricity (exposure to oxygen stream) and long-term stability were carried out over monolithic catalysts with the optimized composition. The results showed that Ce0.8Zr0.2O2 prepared by microemulsion methods was the preferred washcoat, and that 50wt% Ce0.8Zr0.2O2 coat loading and 0.68wt% Pt loading were required to reduce CO content to ca. 1%. The optimal catalytic performance was achieved over 0.11 wt% Re/0.34wt% Pt/50wt% Ce0.8Zr0.2O2-M/cordierite catalyst. Pyrophoricity tests indicated that no obvious activity loss was observed over 0.11 wt% Re/0.34 wt% Pt/50wt% Ce0.8Zr0.2O2-M/Cordierite catalyst after three exposures to oxygen; while 17% of the initial activity was lost over industrial B206 after one exposure. Monolithic 0.11wt% Re/0.34wt% Pt/50wt% Ce0.8Zr0.2O2-M/cordierite catalyst exhibited good stability during 80h on-stream test. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: SELECTIVE CO OXIDATION ;  CERIA CATALYSTS ;  GENERATION ;  METALS ;  OXIDES ;  SYSTEM
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000258987000011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100503
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

Recommended Citation:
Du, Xiaru,Gao, Diannan,Yuan, Zhongshan,et al. Monolithic Pt/Ce0.8Zr0.2O2/cordierite catalysts for low temperature water gas shift reaction in the real reformate[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2008,33(14):3710-3718.
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