Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts

Detalhes bibliográficos
Autor(a) principal: Oliveira Neto,Almir
Data de Publicação: 2000
Outros Autores: Perez,Joelma, Napporn,Wilhelmin T., 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=S0103-50532000000100008
Resumo: The electrocatalytic oxidation of methanol on Pt:Mo dispersed on carbon prepared using an alternative method recently developed in this laboratory was investigated. The EDX analysis confirmed that the simultaneous reduction of the precursor salts of Pt and Mo leads to the presence of these materials at the nominal composition initially calculated. The addition of Mo to Pt causes an increase of the oxidation currents, but does not improve the catalytic effect for methanol oxidation. Tafel plots for various methanol concentrations showed the presence of two slopes. On line differential electrochemical mass spectrometry (DEMS) was used to investigate the distribution of products and intermediates in methanol oxidation.
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spelling Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalystsmethanol electrooxidationPt:Mo dispersed catalystsThe electrocatalytic oxidation of methanol on Pt:Mo dispersed on carbon prepared using an alternative method recently developed in this laboratory was investigated. The EDX analysis confirmed that the simultaneous reduction of the precursor salts of Pt and Mo leads to the presence of these materials at the nominal composition initially calculated. The addition of Mo to Pt causes an increase of the oxidation currents, but does not improve the catalytic effect for methanol oxidation. Tafel plots for various methanol concentrations showed the presence of two slopes. On line differential electrochemical mass spectrometry (DEMS) was used to investigate the distribution of products and intermediates in methanol oxidation.Sociedade Brasileira de Química2000-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532000000100008Journal of the Brazilian Chemical Society v.11 n.1 2000reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532000000100008info:eu-repo/semantics/openAccessOliveira Neto,AlmirPerez,JoelmaNapporn,Wilhelmin T.Ticianelli,Edson A.Gonzalez,Ernesto R.eng2000-06-01T00:00:00Zoai:scielo:S0103-50532000000100008Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2000-06-01T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts
title Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts
spellingShingle Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts
Oliveira Neto,Almir
methanol electrooxidation
Pt:Mo dispersed catalysts
title_short Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts
title_full Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts
title_fullStr Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts
title_full_unstemmed Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts
title_sort Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts
author Oliveira Neto,Almir
author_facet Oliveira Neto,Almir
Perez,Joelma
Napporn,Wilhelmin T.
Ticianelli,Edson A.
Gonzalez,Ernesto R.
author_role author
author2 Perez,Joelma
Napporn,Wilhelmin T.
Ticianelli,Edson A.
Gonzalez,Ernesto R.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Oliveira Neto,Almir
Perez,Joelma
Napporn,Wilhelmin T.
Ticianelli,Edson A.
Gonzalez,Ernesto R.
dc.subject.por.fl_str_mv methanol electrooxidation
Pt:Mo dispersed catalysts
topic methanol electrooxidation
Pt:Mo dispersed catalysts
description The electrocatalytic oxidation of methanol on Pt:Mo dispersed on carbon prepared using an alternative method recently developed in this laboratory was investigated. The EDX analysis confirmed that the simultaneous reduction of the precursor salts of Pt and Mo leads to the presence of these materials at the nominal composition initially calculated. The addition of Mo to Pt causes an increase of the oxidation currents, but does not improve the catalytic effect for methanol oxidation. Tafel plots for various methanol concentrations showed the presence of two slopes. On line differential electrochemical mass spectrometry (DEMS) was used to investigate the distribution of products and intermediates in methanol oxidation.
publishDate 2000
dc.date.none.fl_str_mv 2000-02-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532000000100008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532000000100008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532000000100008
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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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.11 n.1 2000
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
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instname_str Sociedade Brasileira de Química (SBQ)
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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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