Vanadium-promoted Pt/CeO2 catalyst for water–gas shift reaction

Detalhes bibliográficos
Autor(a) principal: Farias, Andréa M. Duarte de
Data de Publicação: 2008
Outros Autores: Bargiela, Pascal, Rocha, Maria da Graça Martins Carneiro da, Fraga, Marco A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5997
Resumo: Acesso restrito: Texto completo. p. 93-102
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spelling Farias, Andréa M. Duarte deBargiela, PascalRocha, Maria da Graça Martins Carneiro daFraga, Marco A.Farias, Andréa M. Duarte deBargiela, PascalRocha, Maria da Graça Martins Carneiro daFraga, Marco A.2012-05-30T18:06:15Z20080021-9517http://www.repositorio.ufba.br/ri/handle/ri/5997v. 260, n. 1Acesso restrito: Texto completo. p. 93-102Water–gas shift reaction has found new purpose and challenges due to its application in clean power generation systems based on fuel cells. It has been shown that the catalysts performance is dependent on both the metal phase and the nature of the support. In this contribution the modification of Pt/CeO2 catalyst with vanadium was exploited. Spectroscopic techniques revealed that distinct dispersed VOx species were generated onto the catalysts by using different vanadium loadings. The reduction of the catalysts and CO adsorption were monitored by infrared spectroscopy. It was found that the formation/decomposition of surface carbonates is affected by vanadium. Generation of multicoordinated carbonates is inhibited due to the decrease of the exposed cerium surface cations. The catalytic activity increased up to a vanadium surface density of 6 V atoms/nm2. Improvement in water–gas shift reaction kinetics is associated with the V–O–Ce bonds.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-05-30T18:06:15Z No. of bitstreams: 1 __ac.els-cdn.com_S002195...7d9aa211f4ebb8119f987dbd28a48.pdf: 369367 bytes, checksum: 8c9acd9dba4740136e17cf99c78fd2b2 (MD5)Made available in DSpace on 2012-05-30T18:06:15Z (GMT). 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dc.title.pt_BR.fl_str_mv Vanadium-promoted Pt/CeO2 catalyst for water–gas shift reaction
dc.title.alternative.pt_BR.fl_str_mv Journal of Catalysis
title Vanadium-promoted Pt/CeO2 catalyst for water–gas shift reaction
spellingShingle Vanadium-promoted Pt/CeO2 catalyst for water–gas shift reaction
Farias, Andréa M. Duarte de
Water–gas shift
Fuel cell
Vanadium
Ceria
XPS
DRIFTS
title_short Vanadium-promoted Pt/CeO2 catalyst for water–gas shift reaction
title_full Vanadium-promoted Pt/CeO2 catalyst for water–gas shift reaction
title_fullStr Vanadium-promoted Pt/CeO2 catalyst for water–gas shift reaction
title_full_unstemmed Vanadium-promoted Pt/CeO2 catalyst for water–gas shift reaction
title_sort Vanadium-promoted Pt/CeO2 catalyst for water–gas shift reaction
author Farias, Andréa M. Duarte de
author_facet Farias, Andréa M. Duarte de
Bargiela, Pascal
Rocha, Maria da Graça Martins Carneiro da
Fraga, Marco A.
author_role author
author2 Bargiela, Pascal
Rocha, Maria da Graça Martins Carneiro da
Fraga, Marco A.
author2_role author
author
author
dc.contributor.author.fl_str_mv Farias, Andréa M. Duarte de
Bargiela, Pascal
Rocha, Maria da Graça Martins Carneiro da
Fraga, Marco A.
Farias, Andréa M. Duarte de
Bargiela, Pascal
Rocha, Maria da Graça Martins Carneiro da
Fraga, Marco A.
dc.subject.por.fl_str_mv Water–gas shift
Fuel cell
Vanadium
Ceria
XPS
DRIFTS
topic Water–gas shift
Fuel cell
Vanadium
Ceria
XPS
DRIFTS
description Acesso restrito: Texto completo. p. 93-102
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2012-05-30T18:06:15Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/5997
dc.identifier.issn.none.fl_str_mv 0021-9517
dc.identifier.number.pt_BR.fl_str_mv v. 260, n. 1
identifier_str_mv 0021-9517
v. 260, n. 1
url http://www.repositorio.ufba.br/ri/handle/ri/5997
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.jcat.2008.09.004
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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reponame_str Repositório Institucional da UFBA
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