Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carbon

Detalhes bibliográficos
Autor(a) principal: Colmati Jr.,Flavio
Data de Publicação: 2002
Outros Autores: Lizcano-Valbuena,William H., Camara,Giuseppe A., Ticianelli,Edson A., Gonzalez,Ernesto R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000400011
Resumo: This work describes the preparation and characterization of Pt-Ru alloys dispersed on high surface area carbon, which were evaluated for CO oxidation on thin porous coating rotating disk electrodes and for hydrogen oxidation on polymer electrolyte fuel cells fed with hydrogen containing 100 ppm CO. A thermal treatment (H2, 300 ºC) applied to the catalysts improves the tolerance to small quantities of CO and, in some cases, reduces the potential necessary to promote the CO oxidation during a linear potential scan. Under operational conditions in a fuel cell in the presence of CO it was observed that the best results were obtained when the Pt-Ru/C alloy was prepared by simultaneous reduction of the ions Pt (IV) and Ru (III), as opposed to a sequential reduction.
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spelling Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carboncarbon monoxidePt-Ru alloyssupported catalyststhermal treatmentThis work describes the preparation and characterization of Pt-Ru alloys dispersed on high surface area carbon, which were evaluated for CO oxidation on thin porous coating rotating disk electrodes and for hydrogen oxidation on polymer electrolyte fuel cells fed with hydrogen containing 100 ppm CO. A thermal treatment (H2, 300 ºC) applied to the catalysts improves the tolerance to small quantities of CO and, in some cases, reduces the potential necessary to promote the CO oxidation during a linear potential scan. Under operational conditions in a fuel cell in the presence of CO it was observed that the best results were obtained when the Pt-Ru/C alloy was prepared by simultaneous reduction of the ions Pt (IV) and Ru (III), as opposed to a sequential reduction.Sociedade Brasileira de Química2002-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000400011Journal of the Brazilian Chemical Society v.13 n.4 2002reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532002000400011info:eu-repo/semantics/openAccessColmati Jr.,FlavioLizcano-Valbuena,William H.Camara,Giuseppe A.Ticianelli,Edson A.Gonzalez,Ernesto R.eng2002-09-06T00:00:00Zoai:scielo:S0103-50532002000400011Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2002-09-06T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carbon
title Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carbon
spellingShingle Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carbon
Colmati Jr.,Flavio
carbon monoxide
Pt-Ru alloys
supported catalysts
thermal treatment
title_short Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carbon
title_full Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carbon
title_fullStr Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carbon
title_full_unstemmed Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carbon
title_sort Carbon monoxide oxidation on Pt-Ru electrocatalysts supported on high surface area carbon
author Colmati Jr.,Flavio
author_facet Colmati Jr.,Flavio
Lizcano-Valbuena,William H.
Camara,Giuseppe A.
Ticianelli,Edson A.
Gonzalez,Ernesto R.
author_role author
author2 Lizcano-Valbuena,William H.
Camara,Giuseppe A.
Ticianelli,Edson A.
Gonzalez,Ernesto R.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Colmati Jr.,Flavio
Lizcano-Valbuena,William H.
Camara,Giuseppe A.
Ticianelli,Edson A.
Gonzalez,Ernesto R.
dc.subject.por.fl_str_mv carbon monoxide
Pt-Ru alloys
supported catalysts
thermal treatment
topic carbon monoxide
Pt-Ru alloys
supported catalysts
thermal treatment
description This work describes the preparation and characterization of Pt-Ru alloys dispersed on high surface area carbon, which were evaluated for CO oxidation on thin porous coating rotating disk electrodes and for hydrogen oxidation on polymer electrolyte fuel cells fed with hydrogen containing 100 ppm CO. A thermal treatment (H2, 300 ºC) applied to the catalysts improves the tolerance to small quantities of CO and, in some cases, reduces the potential necessary to promote the CO oxidation during a linear potential scan. Under operational conditions in a fuel cell in the presence of CO it was observed that the best results were obtained when the Pt-Ru/C alloy was prepared by simultaneous reduction of the ions Pt (IV) and Ru (III), as opposed to a sequential reduction.
publishDate 2002
dc.date.none.fl_str_mv 2002-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000400011
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000400011
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532002000400011
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.13 n.4 2002
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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