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题名: Synthesis and characterization of carbon black supported Pt-Ru alloy as a model catalyst for fuel cells
作者: Zhang, YJ;  Maroto-Valiente, A;  Rodriguez-Ramos, I;  Xin, Q;  Guerrero-Ruiz, A
关键词: carbon black ;  Pt-Ru alloy catalysts ;  temperature-programmed reduction ;  adsorption of H2 and CO ;  n-hexane ;  differential heats of adsorption ;  microcalorimetry
刊名: CATALYSIS TODAY
发表日期: 2004-09-01
DOI: 10.1016/j.cattod.2004.06.017
卷: 93-5, 页:619-626
收录类别: SCI ;  ISTP
文章类型: Article
项目归属: 305
产权排名: 2;4
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: A set of bimetallic Pt-Ru catalysts prepared by co-impregnation of carbon black with ruthenium(III) chloride hydrate and hydrogen hexachloroplatinate(IV) hydrate were investigated by temperature-programmed reduction (TPR), chemisorption of hydrogen, transmission electron microscopy (TEM), microcalorimetry of adsorbed CO and a structure-sensitive reaction (n-hexane conversion). The results showed that the volumetric capacities for CO and H-2 adsorption is influenced in the bimetallic Pt-Ru catalysts by the formation of a Pt-Ru alloy. The n-hexane reaction revealed that the reaction mechanism for the pure Pt catalyst mainly occurs via cyclic isomerization and aromatization due to the presence of bigger Pt surface ensembles, whereas the Pt-Ru catalysts exhibited predominantly bond-shift isomerization by the diluting effect of Ru metal addition. The differential heats of CO chemisorption on Pt-Ru catalysts fell between the two monometallic Pt and Ru catalysts extremes. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: ELECTROCATALYTIC ACTIVITY ;  RUTHENIUM CATALYSTS ;  METHANOL OXIDATION ;  METAL-CATALYSTS ;  N-HEXANE ;  PLATINUM ;  CO ;  ELECTROOXIDATION ;  HYDROGENATION ;  ISOMERIZATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000223973200088
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81243
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.Univ Nacl Educ Distancia, Fac Ciencias, Dept Quim Inorgan & Tecn, Madrid 28040, Spain
2.CSIC, Inst Catalisis & Petr Quim, Madrid 28049, Spain
3.Chinese Acad Sci, Dalian Inst Chem Phys, Beijing 100864, Peoples R China

Recommended Citation:
Zhang, YJ,Maroto-Valiente, A,Rodriguez-Ramos, I,et al. Synthesis and characterization of carbon black supported Pt-Ru alloy as a model catalyst for fuel cells[J]. CATALYSIS TODAY,2004,93-5:619-626.
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