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dc.contributor.author
Milt, Viviana Guadalupe
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dc.contributor.author
Banus, Ezequiel David
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dc.contributor.author
Miro, Eduardo Ernesto
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dc.contributor.author
Yates, M.
dc.contributor.author
Martín, J. C.
dc.contributor.author
Rasmussen, S. B.
dc.contributor.author
Ávila, P.
dc.date.available
2018-08-29T19:51:52Z
dc.date.issued
2010-03
dc.identifier.citation
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
dc.identifier.issn
1385-8947
dc.identifier.uri
http://hdl.handle.net/11336/57568
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Diesel Contaminants
dc.subject
Natural Sepiolite
dc.subject
Nox Adsorption
dc.subject
Soot Combustion
dc.subject.classification
Ingeniería Medioambiental y Geológica, Geotécnicas
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dc.subject.classification
Ingeniería del Medio Ambiente
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-14T14:32:23Z
dc.journal.volume
157
dc.journal.number
2-3
dc.journal.pagination
530-538
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
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
dc.description.fil
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
dc.description.fil
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
dc.description.fil
Fil: Yates, M.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
dc.description.fil
Fil: Martín, J. C.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
dc.description.fil
Fil: Rasmussen, S. B.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
dc.description.fil
Fil: Ávila, P.. Consejo Superior de Investigaciones Científicas. Instituto de Catalisis y Petroleoquímica. Departamento de Catalisis Aplicada; España
dc.journal.title
Chemical Engineering Journal
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.cej.2009.12.049
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