Electrocatalytic oxidation of methanol: study with Pt:Mo dispersed catalysts
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Outros Autores: | , , , |
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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Journal of the Brazilian Chemical Society (Online) |
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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 |
format |
article |
status_str |
publishedVersion |
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 |
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.11 n.1 2000 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 |
_version_ |
1750318163832078336 |