Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts
- Autores
- Pisarello Milesi, Maria Laura; Milt, Viviana Guadalupe; Peralta, María Ariela; Querini, Carlos Alberto; Miro, Eduardo Ernesto
- Año de publicación
- 2002
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In this paper, previously reported findings and new results presented here are discussed with the main objective of establishing the reaction mechanism for soot oxidation on different supports and catalysts formulations. Catalysts containing Co, K and/or Ba supported on MgO, La2O3 and CeO2 have been studied for diesel soot catalytic combustion. Among them, K/La2O3 and K/CeO2 showed the best activity and stability for the combustion of soot with oxygen. A reaction mechanism involving the redox sites and the surface-carbonate species takes place on these catalysts. On the other hand, Co,K/La2O3 and Co,K/CeO2 catalysts display activity for the simultaneous removal of soot and nitric oxide. The soot-catalyst contacting phenomenon was also addressed. A synergic La-K effect was observed in which the mechanical mixtures of soot with K-La2O3 showed higher combustion rates than those observed when K and La were directly deposited on the soot surface. The effect of the addition of Ba was explored with the aim of promoting the interaction of the solid with NO2, thus combining the NOx catalytic trap concept with the soot combustion for filter regeneration. Ba/CeO2 and Ba,K/CeO2 were effective in NOx absorption as shown in the microbalance experiments. However, the formation of stable nitrate species inhibits the soot combustion reaction. © 2002 Elsevier Science B.V. All rights reserved.
Fil: Pisarello Milesi, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
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: Querini, Carlos Alberto. 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
-
Co-K-Ba Catalysts
Nitric Oxide Removal
Soot Combustion - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/40100
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
spelling |
Simultaneous removal of soot and nitrogen oxides from diesel engine exhaustsPisarello Milesi, Maria LauraMilt, Viviana GuadalupePeralta, María ArielaQuerini, Carlos AlbertoMiro, Eduardo ErnestoCo-K-Ba CatalystsNitric Oxide RemovalSoot Combustionhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In this paper, previously reported findings and new results presented here are discussed with the main objective of establishing the reaction mechanism for soot oxidation on different supports and catalysts formulations. Catalysts containing Co, K and/or Ba supported on MgO, La2O3 and CeO2 have been studied for diesel soot catalytic combustion. Among them, K/La2O3 and K/CeO2 showed the best activity and stability for the combustion of soot with oxygen. A reaction mechanism involving the redox sites and the surface-carbonate species takes place on these catalysts. On the other hand, Co,K/La2O3 and Co,K/CeO2 catalysts display activity for the simultaneous removal of soot and nitric oxide. The soot-catalyst contacting phenomenon was also addressed. A synergic La-K effect was observed in which the mechanical mixtures of soot with K-La2O3 showed higher combustion rates than those observed when K and La were directly deposited on the soot surface. The effect of the addition of Ba was explored with the aim of promoting the interaction of the solid with NO2, thus combining the NOx catalytic trap concept with the soot combustion for filter regeneration. Ba/CeO2 and Ba,K/CeO2 were effective in NOx absorption as shown in the microbalance experiments. However, the formation of stable nitrate species inhibits the soot combustion reaction. © 2002 Elsevier Science B.V. All rights reserved.Fil: Pisarello Milesi, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: 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: Querini, Carlos Alberto. 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 Science2002-07info: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/11336/40100Pisarello Milesi, Maria Laura; Milt, Viviana Guadalupe; Peralta, María Ariela; Querini, Carlos Alberto; Miro, Eduardo Ernesto; Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts; Elsevier Science; Catalysis Today; 75; 1-4; 7-2002; 465-4700920-5861CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S0920-5861(02)00097-4info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0920586102000974info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:23Zoai:ri.conicet.gov.ar:11336/40100instacron: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 09:36:23.294CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts |
title |
Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts |
spellingShingle |
Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts Pisarello Milesi, Maria Laura Co-K-Ba Catalysts Nitric Oxide Removal Soot Combustion |
title_short |
Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts |
title_full |
Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts |
title_fullStr |
Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts |
title_full_unstemmed |
Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts |
title_sort |
Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts |
dc.creator.none.fl_str_mv |
Pisarello Milesi, Maria Laura Milt, Viviana Guadalupe Peralta, María Ariela Querini, Carlos Alberto Miro, Eduardo Ernesto |
author |
Pisarello Milesi, Maria Laura |
author_facet |
Pisarello Milesi, Maria Laura Milt, Viviana Guadalupe Peralta, María Ariela Querini, Carlos Alberto Miro, Eduardo Ernesto |
author_role |
author |
author2 |
Milt, Viviana Guadalupe Peralta, María Ariela Querini, Carlos Alberto Miro, Eduardo Ernesto |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Co-K-Ba Catalysts Nitric Oxide Removal Soot Combustion |
topic |
Co-K-Ba Catalysts Nitric Oxide Removal Soot Combustion |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
In this paper, previously reported findings and new results presented here are discussed with the main objective of establishing the reaction mechanism for soot oxidation on different supports and catalysts formulations. Catalysts containing Co, K and/or Ba supported on MgO, La2O3 and CeO2 have been studied for diesel soot catalytic combustion. Among them, K/La2O3 and K/CeO2 showed the best activity and stability for the combustion of soot with oxygen. A reaction mechanism involving the redox sites and the surface-carbonate species takes place on these catalysts. On the other hand, Co,K/La2O3 and Co,K/CeO2 catalysts display activity for the simultaneous removal of soot and nitric oxide. The soot-catalyst contacting phenomenon was also addressed. A synergic La-K effect was observed in which the mechanical mixtures of soot with K-La2O3 showed higher combustion rates than those observed when K and La were directly deposited on the soot surface. The effect of the addition of Ba was explored with the aim of promoting the interaction of the solid with NO2, thus combining the NOx catalytic trap concept with the soot combustion for filter regeneration. Ba/CeO2 and Ba,K/CeO2 were effective in NOx absorption as shown in the microbalance experiments. However, the formation of stable nitrate species inhibits the soot combustion reaction. © 2002 Elsevier Science B.V. All rights reserved. Fil: Pisarello Milesi, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina 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: Querini, Carlos Alberto. 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 |
In this paper, previously reported findings and new results presented here are discussed with the main objective of establishing the reaction mechanism for soot oxidation on different supports and catalysts formulations. Catalysts containing Co, K and/or Ba supported on MgO, La2O3 and CeO2 have been studied for diesel soot catalytic combustion. Among them, K/La2O3 and K/CeO2 showed the best activity and stability for the combustion of soot with oxygen. A reaction mechanism involving the redox sites and the surface-carbonate species takes place on these catalysts. On the other hand, Co,K/La2O3 and Co,K/CeO2 catalysts display activity for the simultaneous removal of soot and nitric oxide. The soot-catalyst contacting phenomenon was also addressed. A synergic La-K effect was observed in which the mechanical mixtures of soot with K-La2O3 showed higher combustion rates than those observed when K and La were directly deposited on the soot surface. The effect of the addition of Ba was explored with the aim of promoting the interaction of the solid with NO2, thus combining the NOx catalytic trap concept with the soot combustion for filter regeneration. Ba/CeO2 and Ba,K/CeO2 were effective in NOx absorption as shown in the microbalance experiments. However, the formation of stable nitrate species inhibits the soot combustion reaction. © 2002 Elsevier Science B.V. All rights reserved. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-07 |
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/11336/40100 Pisarello Milesi, Maria Laura; Milt, Viviana Guadalupe; Peralta, María Ariela; Querini, Carlos Alberto; Miro, Eduardo Ernesto; Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts; Elsevier Science; Catalysis Today; 75; 1-4; 7-2002; 465-470 0920-5861 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/40100 |
identifier_str_mv |
Pisarello Milesi, Maria Laura; Milt, Viviana Guadalupe; Peralta, María Ariela; Querini, Carlos Alberto; Miro, Eduardo Ernesto; Simultaneous removal of soot and nitrogen oxides from diesel engine exhausts; Elsevier Science; Catalysis Today; 75; 1-4; 7-2002; 465-470 0920-5861 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/S0920-5861(02)00097-4 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0920586102000974 |
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 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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13.070432 |