Cobalt catalysts for the oxidation of diesel soot particulate

Autores
Harrison, Philip G.; Ball, Ian K.; Daniell, Wayne; Lukinskas, Povilas; Céspedes, Matias; Miro, Eduardo Ernesto; Ulla, Maria Alicia del H.
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Ceria-supported materials prepared by three routes, coprecipitation from aqueous solution containing both Co2+ and Ce3+ ions, and impregnation of preformed ceria gel with either cobalt(II) nitrate or cobalt(II) acetate, have been investigated for catalytic activity towards oxidation of diesel soot. All three materials catalyze the conversion of diesel soot particulate to carbon dioxide under a flow of either 6 vol.% O2 or 0.5 vol.% NO + 6 vol.% O2 in helium in the temperature range 573?613 K. The temperature of maximum conversion rate shows a small dependence on the particular catalyst and the composition of the oxidant. Raman spectroscopy of the ceria-supported cobalt catalysts indicate that the cobalt is present as Co3O4, but its average particle size in Co/CeO2 impregnated with Co acetate is smaller than the other two Co/CeO2 preparations. Features in the temperature-programmed reduction (TPR) profiles in the range 500?600 K, coincident with the temperature of catalytic activity, appear to be associated with reduction of the cobalt, suggesting a redox-type mechanism assisted by oxygen spillover on the CeO2 support. In contrast, cobalt supported on alumina, silica, and tin(IV) oxide obtained by coprecipitation show much lower activity due to the presence of dispersed Co2+ ions in these materials although small amounts of Co3O4 may be present on alumina and tin(IV) oxide.
Fil: Harrison, Philip G.. The University of Nottingham; Reino Unido
Fil: Ball, Ian K.. The University of Nottingham; Reino Unido. University Of Nottingham; Reino Unido
Fil: Daniell, Wayne. Ludwig Maximilians Universitat; Alemania
Fil: Lukinskas, Povilas. Ludwig Maximilians Universitat; Alemania
Fil: Céspedes, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Miro, Eduardo Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Ulla, Maria Alicia del H.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Materia
Soot
Coprecepitation
Raman Spectroscopy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/40094
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/40094
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Cobalt catalysts for the oxidation of diesel soot particulateHarrison, Philip G.Ball, Ian K.Daniell, WayneLukinskas, PovilasCéspedes, MatiasMiro, Eduardo ErnestoUlla, Maria Alicia del H.SootCoprecepitationRaman Spectroscopyhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Ceria-supported materials prepared by three routes, coprecipitation from aqueous solution containing both Co2+ and Ce3+ ions, and impregnation of preformed ceria gel with either cobalt(II) nitrate or cobalt(II) acetate, have been investigated for catalytic activity towards oxidation of diesel soot. All three materials catalyze the conversion of diesel soot particulate to carbon dioxide under a flow of either 6 vol.% O2 or 0.5 vol.% NO + 6 vol.% O2 in helium in the temperature range 573?613 K. The temperature of maximum conversion rate shows a small dependence on the particular catalyst and the composition of the oxidant. Raman spectroscopy of the ceria-supported cobalt catalysts indicate that the cobalt is present as Co3O4, but its average particle size in Co/CeO2 impregnated with Co acetate is smaller than the other two Co/CeO2 preparations. Features in the temperature-programmed reduction (TPR) profiles in the range 500?600 K, coincident with the temperature of catalytic activity, appear to be associated with reduction of the cobalt, suggesting a redox-type mechanism assisted by oxygen spillover on the CeO2 support. In contrast, cobalt supported on alumina, silica, and tin(IV) oxide obtained by coprecipitation show much lower activity due to the presence of dispersed Co2+ ions in these materials although small amounts of Co3O4 may be present on alumina and tin(IV) oxide.Fil: Harrison, Philip G.. The University of Nottingham; Reino UnidoFil: Ball, Ian K.. The University of Nottingham; Reino Unido. University Of Nottingham; Reino UnidoFil: Daniell, Wayne. Ludwig Maximilians Universitat; AlemaniaFil: Lukinskas, Povilas. Ludwig Maximilians Universitat; AlemaniaFil: Céspedes, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Miro, Eduardo Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Ulla, Maria Alicia del H.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaElsevier Science Sa2003-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/40094Harrison, Philip G.; Ball, Ian K.; Daniell, Wayne; Lukinskas, Povilas; Céspedes, Matias; et al.; Cobalt catalysts for the oxidation of diesel soot particulate; Elsevier Science Sa; Chemical Engineering Journal; 95; 1-3; 9-2003; 47-551385-8947CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S1385-8947(03)00077-9info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385894703000779info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-26T10:04:00Zoai:ri.conicet.gov.ar:11336/40094instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-02-26 10:04:01.147CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Cobalt catalysts for the oxidation of diesel soot particulate
title Cobalt catalysts for the oxidation of diesel soot particulate
spellingShingle Cobalt catalysts for the oxidation of diesel soot particulate
Harrison, Philip G.
Soot
Coprecepitation
Raman Spectroscopy
title_short Cobalt catalysts for the oxidation of diesel soot particulate
title_full Cobalt catalysts for the oxidation of diesel soot particulate
title_fullStr Cobalt catalysts for the oxidation of diesel soot particulate
title_full_unstemmed Cobalt catalysts for the oxidation of diesel soot particulate
title_sort Cobalt catalysts for the oxidation of diesel soot particulate
dc.creator.none.fl_str_mv Harrison, Philip G.
Ball, Ian K.
Daniell, Wayne
Lukinskas, Povilas
Céspedes, Matias
Miro, Eduardo Ernesto
Ulla, Maria Alicia del H.
author Harrison, Philip G.
author_facet Harrison, Philip G.
Ball, Ian K.
Daniell, Wayne
Lukinskas, Povilas
Céspedes, Matias
Miro, Eduardo Ernesto
Ulla, Maria Alicia del H.
author_role author
author2 Ball, Ian K.
Daniell, Wayne
Lukinskas, Povilas
Céspedes, Matias
Miro, Eduardo Ernesto
Ulla, Maria Alicia del H.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Soot
Coprecepitation
Raman Spectroscopy
topic Soot
Coprecepitation
Raman Spectroscopy
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Ceria-supported materials prepared by three routes, coprecipitation from aqueous solution containing both Co2+ and Ce3+ ions, and impregnation of preformed ceria gel with either cobalt(II) nitrate or cobalt(II) acetate, have been investigated for catalytic activity towards oxidation of diesel soot. All three materials catalyze the conversion of diesel soot particulate to carbon dioxide under a flow of either 6 vol.% O2 or 0.5 vol.% NO + 6 vol.% O2 in helium in the temperature range 573?613 K. The temperature of maximum conversion rate shows a small dependence on the particular catalyst and the composition of the oxidant. Raman spectroscopy of the ceria-supported cobalt catalysts indicate that the cobalt is present as Co3O4, but its average particle size in Co/CeO2 impregnated with Co acetate is smaller than the other two Co/CeO2 preparations. Features in the temperature-programmed reduction (TPR) profiles in the range 500?600 K, coincident with the temperature of catalytic activity, appear to be associated with reduction of the cobalt, suggesting a redox-type mechanism assisted by oxygen spillover on the CeO2 support. In contrast, cobalt supported on alumina, silica, and tin(IV) oxide obtained by coprecipitation show much lower activity due to the presence of dispersed Co2+ ions in these materials although small amounts of Co3O4 may be present on alumina and tin(IV) oxide.
Fil: Harrison, Philip G.. The University of Nottingham; Reino Unido
Fil: Ball, Ian K.. The University of Nottingham; Reino Unido. University Of Nottingham; Reino Unido
Fil: Daniell, Wayne. Ludwig Maximilians Universitat; Alemania
Fil: Lukinskas, Povilas. Ludwig Maximilians Universitat; Alemania
Fil: Céspedes, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Miro, Eduardo Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Ulla, Maria Alicia del H.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
description Ceria-supported materials prepared by three routes, coprecipitation from aqueous solution containing both Co2+ and Ce3+ ions, and impregnation of preformed ceria gel with either cobalt(II) nitrate or cobalt(II) acetate, have been investigated for catalytic activity towards oxidation of diesel soot. All three materials catalyze the conversion of diesel soot particulate to carbon dioxide under a flow of either 6 vol.% O2 or 0.5 vol.% NO + 6 vol.% O2 in helium in the temperature range 573?613 K. The temperature of maximum conversion rate shows a small dependence on the particular catalyst and the composition of the oxidant. Raman spectroscopy of the ceria-supported cobalt catalysts indicate that the cobalt is present as Co3O4, but its average particle size in Co/CeO2 impregnated with Co acetate is smaller than the other two Co/CeO2 preparations. Features in the temperature-programmed reduction (TPR) profiles in the range 500?600 K, coincident with the temperature of catalytic activity, appear to be associated with reduction of the cobalt, suggesting a redox-type mechanism assisted by oxygen spillover on the CeO2 support. In contrast, cobalt supported on alumina, silica, and tin(IV) oxide obtained by coprecipitation show much lower activity due to the presence of dispersed Co2+ ions in these materials although small amounts of Co3O4 may be present on alumina and tin(IV) oxide.
publishDate 2003
dc.date.none.fl_str_mv 2003-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/40094
Harrison, Philip G.; Ball, Ian K.; Daniell, Wayne; Lukinskas, Povilas; Céspedes, Matias; et al.; Cobalt catalysts for the oxidation of diesel soot particulate; Elsevier Science Sa; Chemical Engineering Journal; 95; 1-3; 9-2003; 47-55
1385-8947
CONICET Digital
CONICET
url http://hdl.handle.net/11336/40094
identifier_str_mv Harrison, Philip G.; Ball, Ian K.; Daniell, Wayne; Lukinskas, Povilas; Céspedes, Matias; et al.; Cobalt catalysts for the oxidation of diesel soot particulate; Elsevier Science Sa; Chemical Engineering Journal; 95; 1-3; 9-2003; 47-55
1385-8947
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/S1385-8947(03)00077-9
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385894703000779
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.176822

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