Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst

Autores
Milt, Viviana Guadalupe; Peralta, María Ariela; Ulla, Maria Alicia del H.; Miro, Eduardo Ernesto
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Ba,K/CeO2 catalyst is active both for NOx trapping and soot combustion. In this work we report a Ba-K interaction that prevents K sulfation when NOx is present, thus preserving the activity of K towards soot combustion during the working period of the trap. This effect is originated in the K2SO4(s) + Ba(NO3)2(s) → 2KNO3(s) + BaSO4(s) reaction, which is thermodynamically favored. In the absence of NOx, the soot combustion reaction is strongly depressed by SO2 whereas when NOx is present both the sulfated and the non-sulfated catalysts present similar TPO patterns.
Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Peralta, María Ariela. 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
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
Materia
Ba,K/Ceo2 Catalysts
Bak Interaction;
Nox Traps
Diesel Soot Combustion
Sulfur Poisoning
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/65325
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/65325
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalystMilt, Viviana GuadalupePeralta, María ArielaUlla, Maria Alicia del H.Miro, Eduardo ErnestoBa,K/Ceo2 CatalystsBak Interaction;Nox TrapsDiesel Soot CombustionSulfur Poisoninghttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The Ba,K/CeO2 catalyst is active both for NOx trapping and soot combustion. In this work we report a Ba-K interaction that prevents K sulfation when NOx is present, thus preserving the activity of K towards soot combustion during the working period of the trap. This effect is originated in the K2SO4(s) + Ba(NO3)2(s) → 2KNO3(s) + BaSO4(s) reaction, which is thermodynamically favored. In the absence of NOx, the soot combustion reaction is strongly depressed by SO2 whereas when NOx is present both the sulfated and the non-sulfated catalysts present similar TPO patterns.Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Peralta, María Ariela. 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 ; ArgentinaFil: Miro, Eduardo Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaElsevier Science2007-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/65325Milt, Viviana Guadalupe; Peralta, María Ariela; Ulla, Maria Alicia del H.; Miro, Eduardo Ernesto; Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst; Elsevier Science; Catalysis Communications; 8; 5; 5-2007; 765-7691566-7367CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.catcom.2006.09.011info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:23:52Zoai:ri.conicet.gov.ar:11336/65325instacron: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:34982025-09-29 10:23:52.809CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst
title Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst
spellingShingle Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst
Milt, Viviana Guadalupe
Ba,K/Ceo2 Catalysts
Bak Interaction;
Nox Traps
Diesel Soot Combustion
Sulfur Poisoning
title_short Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst
title_full Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst
title_fullStr Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst
title_full_unstemmed Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst
title_sort Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst
dc.creator.none.fl_str_mv Milt, Viviana Guadalupe
Peralta, María Ariela
Ulla, Maria Alicia del H.
Miro, Eduardo Ernesto
author Milt, Viviana Guadalupe
author_facet Milt, Viviana Guadalupe
Peralta, María Ariela
Ulla, Maria Alicia del H.
Miro, Eduardo Ernesto
author_role author
author2 Peralta, María Ariela
Ulla, Maria Alicia del H.
Miro, Eduardo Ernesto
author2_role author
author
author
dc.subject.none.fl_str_mv Ba,K/Ceo2 Catalysts
Bak Interaction;
Nox Traps
Diesel Soot Combustion
Sulfur Poisoning
topic Ba,K/Ceo2 Catalysts
Bak Interaction;
Nox Traps
Diesel Soot Combustion
Sulfur Poisoning
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The Ba,K/CeO2 catalyst is active both for NOx trapping and soot combustion. In this work we report a Ba-K interaction that prevents K sulfation when NOx is present, thus preserving the activity of K towards soot combustion during the working period of the trap. This effect is originated in the K2SO4(s) + Ba(NO3)2(s) → 2KNO3(s) + BaSO4(s) reaction, which is thermodynamically favored. In the absence of NOx, the soot combustion reaction is strongly depressed by SO2 whereas when NOx is present both the sulfated and the non-sulfated catalysts present similar TPO patterns.
Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Peralta, María Ariela. 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
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
description The Ba,K/CeO2 catalyst is active both for NOx trapping and soot combustion. In this work we report a Ba-K interaction that prevents K sulfation when NOx is present, thus preserving the activity of K towards soot combustion during the working period of the trap. This effect is originated in the K2SO4(s) + Ba(NO3)2(s) → 2KNO3(s) + BaSO4(s) reaction, which is thermodynamically favored. In the absence of NOx, the soot combustion reaction is strongly depressed by SO2 whereas when NOx is present both the sulfated and the non-sulfated catalysts present similar TPO patterns.
publishDate 2007
dc.date.none.fl_str_mv 2007-05
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/11336/65325
Milt, Viviana Guadalupe; Peralta, María Ariela; Ulla, Maria Alicia del H.; Miro, Eduardo Ernesto; Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst; Elsevier Science; Catalysis Communications; 8; 5; 5-2007; 765-769
1566-7367
CONICET Digital
CONICET
url http://hdl.handle.net/11336/65325
identifier_str_mv Milt, Viviana Guadalupe; Peralta, María Ariela; Ulla, Maria Alicia del H.; Miro, Eduardo Ernesto; Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba-K interaction on the sulfated Ba,K/CeO2 catalyst; Elsevier Science; Catalysis Communications; 8; 5; 5-2007; 765-769
1566-7367
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/j.catcom.2006.09.011
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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 13.070432

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