Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants

Autores
Milt, Viviana Guadalupe; Banus, Ezequiel David; Miro, Eduardo Ernesto; Yates, M.; Martín, J. C.; Rasmussen, S. B.; Ávila, P.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Natural sepiolite-supported catalysts, structured as highly porous ceramic discs were investigated for their application in diesel exhaust after treatment. Catalysts containing cobalt, potassium and barium, which are active ingredients for diesel soot combustion and NOx adsorption, were prepared by wet impregnation of the support materials. The influence of incorporating CeO2 as additive to the clay (sepiolite), along with activated carbon as pore generating agent (PGA) which is eliminated during the heat treatment step was studied. The additives affect the textural properties of the discs, that are related with their permeability and filtering capacity, but do not significantly alter their catalytic properties when Co and K are present as the active ingredients. The solids were characterised by several techniques: N2 adsorption, mercury intrusion porosimetry (MIP), TGA-DTA, TPR, XRD and SEM. Different weight losses were observed as the temperature increased in TGA-DTA experiments owing to dehydrations and dehydroxylations of the sepiolite structure. The maximum rate of soot combustion for the Co- and K-containing catalyst was 366 and 453 °C for tight and loose contact, respectively. The bare sepiolite practically does not interact with NO + O2, however, the addition of potassium and/or Ba caused a notable increase in the NOx adsorption capacity. The catalytic activity results for the Co,K/sepiolite system and the excellent rheological properties of pastes that allow extrusion in various shapes which on heat treatment leads to conformed ceramic bodies with high mechanical strength, thermal resistance and large surface areas make this material an interesting potential candidate for the development of catalytic filters for diesel exhaust abatement applications.
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: Banus, Ezequiel David. 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: Yates, M.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
Fil: Martín, J. C.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
Fil: Rasmussen, S. B.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
Fil: Ávila, P.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
Materia
Diesel Contaminants
Natural Sepiolite
Nox Adsorption
Soot Combustion
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:11336/57568
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/57568
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutantsMilt, Viviana GuadalupeBanus, Ezequiel DavidMiro, Eduardo ErnestoYates, M.Martín, J. C.Rasmussen, S. B.Ávila, P.Diesel ContaminantsNatural SepioliteNox AdsorptionSoot Combustionhttps://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2Natural sepiolite-supported catalysts, structured as highly porous ceramic discs were investigated for their application in diesel exhaust after treatment. Catalysts containing cobalt, potassium and barium, which are active ingredients for diesel soot combustion and NOx adsorption, were prepared by wet impregnation of the support materials. The influence of incorporating CeO2 as additive to the clay (sepiolite), along with activated carbon as pore generating agent (PGA) which is eliminated during the heat treatment step was studied. The additives affect the textural properties of the discs, that are related with their permeability and filtering capacity, but do not significantly alter their catalytic properties when Co and K are present as the active ingredients. The solids were characterised by several techniques: N2 adsorption, mercury intrusion porosimetry (MIP), TGA-DTA, TPR, XRD and SEM. Different weight losses were observed as the temperature increased in TGA-DTA experiments owing to dehydrations and dehydroxylations of the sepiolite structure. The maximum rate of soot combustion for the Co- and K-containing catalyst was 366 and 453 °C for tight and loose contact, respectively. The bare sepiolite practically does not interact with NO + O2, however, the addition of potassium and/or Ba caused a notable increase in the NOx adsorption capacity. The catalytic activity results for the Co,K/sepiolite system and the excellent rheological properties of pastes that allow extrusion in various shapes which on heat treatment leads to conformed ceramic bodies with high mechanical strength, thermal resistance and large surface areas make this material an interesting potential candidate for the development of catalytic filters for diesel exhaust abatement applications.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: Banus, Ezequiel David. 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: Yates, M.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; EspañaFil: Martín, J. C.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; EspañaFil: Rasmussen, S. B.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; EspañaFil: Ávila, P.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; EspañaElsevier Science Sa2010-03info: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/11336/57568Milt, Viviana Guadalupe; Banus, Ezequiel David; Miro, Eduardo Ernesto; Yates, M.; Martín, J. C.; et al.; Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants; Elsevier Science Sa; Chemical Engineering Journal; 157; 2-3; 3-2010; 530-5381385-8947CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2009.12.049info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:35:01Zoai:ri.conicet.gov.ar:11336/57568instacron: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 09:35:02.166CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
title Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
spellingShingle Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
Milt, Viviana Guadalupe
Diesel Contaminants
Natural Sepiolite
Nox Adsorption
Soot Combustion
title_short Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
title_full Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
title_fullStr Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
title_full_unstemmed Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
title_sort Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
dc.creator.none.fl_str_mv Milt, Viviana Guadalupe
Banus, Ezequiel David
Miro, Eduardo Ernesto
Yates, M.
Martín, J. C.
Rasmussen, S. B.
Ávila, P.
author Milt, Viviana Guadalupe
author_facet Milt, Viviana Guadalupe
Banus, Ezequiel David
Miro, Eduardo Ernesto
Yates, M.
Martín, J. C.
Rasmussen, S. B.
Ávila, P.
author_role author
author2 Banus, Ezequiel David
Miro, Eduardo Ernesto
Yates, M.
Martín, J. C.
Rasmussen, S. B.
Ávila, P.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Diesel Contaminants
Natural Sepiolite
Nox Adsorption
Soot Combustion
topic Diesel Contaminants
Natural Sepiolite
Nox Adsorption
Soot Combustion
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.7
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Natural sepiolite-supported catalysts, structured as highly porous ceramic discs were investigated for their application in diesel exhaust after treatment. Catalysts containing cobalt, potassium and barium, which are active ingredients for diesel soot combustion and NOx adsorption, were prepared by wet impregnation of the support materials. The influence of incorporating CeO2 as additive to the clay (sepiolite), along with activated carbon as pore generating agent (PGA) which is eliminated during the heat treatment step was studied. The additives affect the textural properties of the discs, that are related with their permeability and filtering capacity, but do not significantly alter their catalytic properties when Co and K are present as the active ingredients. The solids were characterised by several techniques: N2 adsorption, mercury intrusion porosimetry (MIP), TGA-DTA, TPR, XRD and SEM. Different weight losses were observed as the temperature increased in TGA-DTA experiments owing to dehydrations and dehydroxylations of the sepiolite structure. The maximum rate of soot combustion for the Co- and K-containing catalyst was 366 and 453 °C for tight and loose contact, respectively. The bare sepiolite practically does not interact with NO + O2, however, the addition of potassium and/or Ba caused a notable increase in the NOx adsorption capacity. The catalytic activity results for the Co,K/sepiolite system and the excellent rheological properties of pastes that allow extrusion in various shapes which on heat treatment leads to conformed ceramic bodies with high mechanical strength, thermal resistance and large surface areas make this material an interesting potential candidate for the development of catalytic filters for diesel exhaust abatement applications.
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: Banus, Ezequiel David. 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: Yates, M.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
Fil: Martín, J. C.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
Fil: Rasmussen, S. B.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
Fil: Ávila, P.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
description Natural sepiolite-supported catalysts, structured as highly porous ceramic discs were investigated for their application in diesel exhaust after treatment. Catalysts containing cobalt, potassium and barium, which are active ingredients for diesel soot combustion and NOx adsorption, were prepared by wet impregnation of the support materials. The influence of incorporating CeO2 as additive to the clay (sepiolite), along with activated carbon as pore generating agent (PGA) which is eliminated during the heat treatment step was studied. The additives affect the textural properties of the discs, that are related with their permeability and filtering capacity, but do not significantly alter their catalytic properties when Co and K are present as the active ingredients. The solids were characterised by several techniques: N2 adsorption, mercury intrusion porosimetry (MIP), TGA-DTA, TPR, XRD and SEM. Different weight losses were observed as the temperature increased in TGA-DTA experiments owing to dehydrations and dehydroxylations of the sepiolite structure. The maximum rate of soot combustion for the Co- and K-containing catalyst was 366 and 453 °C for tight and loose contact, respectively. The bare sepiolite practically does not interact with NO + O2, however, the addition of potassium and/or Ba caused a notable increase in the NOx adsorption capacity. The catalytic activity results for the Co,K/sepiolite system and the excellent rheological properties of pastes that allow extrusion in various shapes which on heat treatment leads to conformed ceramic bodies with high mechanical strength, thermal resistance and large surface areas make this material an interesting potential candidate for the development of catalytic filters for diesel exhaust abatement applications.
publishDate 2010
dc.date.none.fl_str_mv 2010-03
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/11336/57568
Milt, Viviana Guadalupe; Banus, Ezequiel David; Miro, Eduardo Ernesto; Yates, M.; Martín, J. C.; et al.; Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants; Elsevier Science Sa; Chemical Engineering Journal; 157; 2-3; 3-2010; 530-538
1385-8947
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57568
identifier_str_mv Milt, Viviana Guadalupe; Banus, Ezequiel David; Miro, Eduardo Ernesto; Yates, M.; Martín, J. C.; et al.; Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants; Elsevier Science Sa; Chemical Engineering Journal; 157; 2-3; 3-2010; 530-538
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/j.cej.2009.12.049
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 13.070432

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