Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports

Detalhes bibliográficos
Autor(a) principal: Domingos,Daniela
Data de Publicação: 2012
Outros Autores: Rodrigues,Lílian Maria Tosta Simplício, Brandão,Soraia Teixeira, Rocha,Maria da Graça Carneiro da, Frety,Roger
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000600009
Resumo: Palladium catalysts supported on alumina and zirconia were prepared by the impregnation method and calcined at 600 and 1000 ºC. Catalysts were characterized by BET measurements, XRD, XPS, O2-TPD and tested in methane combustion through temperature programmed surface reaction. Alumina supported catalysts were slightly more active than zirconia supported catalysts, but after initial heat treatment at 1000 ºC, zirconia supported palladium catalyst showed better performance above 500 ºC A pattern between temperature interval stability of PdOx species and activity was observed, where better PdOx stability was associated with more active catalysts.
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spelling Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supportspalladiumzirconiamethane combustionPalladium catalysts supported on alumina and zirconia were prepared by the impregnation method and calcined at 600 and 1000 ºC. Catalysts were characterized by BET measurements, XRD, XPS, O2-TPD and tested in methane combustion through temperature programmed surface reaction. Alumina supported catalysts were slightly more active than zirconia supported catalysts, but after initial heat treatment at 1000 ºC, zirconia supported palladium catalyst showed better performance above 500 ºC A pattern between temperature interval stability of PdOx species and activity was observed, where better PdOx stability was associated with more active catalysts.Sociedade Brasileira de Química2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000600009Química Nova v.35 n.6 2012reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422012000600009info:eu-repo/semantics/openAccessDomingos,DanielaRodrigues,Lílian Maria Tosta SimplícioBrandão,Soraia TeixeiraRocha,Maria da Graça Carneiro daFrety,Rogereng2012-07-25T00:00:00Zoai:scielo:S0100-40422012000600009Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2012-07-25T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports
title Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports
spellingShingle Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports
Domingos,Daniela
palladium
zirconia
methane combustion
title_short Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports
title_full Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports
title_fullStr Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports
title_full_unstemmed Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports
title_sort Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports
author Domingos,Daniela
author_facet Domingos,Daniela
Rodrigues,Lílian Maria Tosta Simplício
Brandão,Soraia Teixeira
Rocha,Maria da Graça Carneiro da
Frety,Roger
author_role author
author2 Rodrigues,Lílian Maria Tosta Simplício
Brandão,Soraia Teixeira
Rocha,Maria da Graça Carneiro da
Frety,Roger
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Domingos,Daniela
Rodrigues,Lílian Maria Tosta Simplício
Brandão,Soraia Teixeira
Rocha,Maria da Graça Carneiro da
Frety,Roger
dc.subject.por.fl_str_mv palladium
zirconia
methane combustion
topic palladium
zirconia
methane combustion
description Palladium catalysts supported on alumina and zirconia were prepared by the impregnation method and calcined at 600 and 1000 ºC. Catalysts were characterized by BET measurements, XRD, XPS, O2-TPD and tested in methane combustion through temperature programmed surface reaction. Alumina supported catalysts were slightly more active than zirconia supported catalysts, but after initial heat treatment at 1000 ºC, zirconia supported palladium catalyst showed better performance above 500 ºC A pattern between temperature interval stability of PdOx species and activity was observed, where better PdOx stability was associated with more active catalysts.
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01
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=S0100-40422012000600009
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000600009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-40422012000600009
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 Química Nova v.35 n.6 2012
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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