Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources

Autores
Montaña, Maia; Leguizamón Aparicio, María Silvia del Valle; Ocsachoque, Marco Antonio; Navas, Marisa Belén; Barros, Ivoneide de C. L.; Rodriguez-Castellón, Enrique; Casella, Mónica Laura; Lick, Ileana Daniela
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This work presents the physicochemical characterization and activity of zirconia-supported silver catalysts for the oxidation of pollutants present in diesel engine exhaust (propane, propene, naphthalene and soot). A series of silver-supported catalysts AgxZ (x = 1, 5 and 10 wt.%, Z = zirconia) were prepared, which were studied by various characterization techniques. The results show that silver is mainly found under the form of small metal nanoparticles (<10 nm) dispersed over the support. The metallic phase coexists with the AgOx oxidic phases. Silver is introduced onto the zirconia, generating Ag–ZrO2 catalysts with high activity for the oxidation of propene and naphthalene. These catalysts also show some activity for soot combustion. Silver species can contribute with zirconia in the catalytic redox cycle, through a synergistic effect, providing sites that facilitate the migration and availability of oxygen, which is favored by the presence of structural defects. This is a novel application of the AgOx–Ag/ZrO2 system in the combustion reaction of propene and naphthalene. The results are highly promising, given that the T50 values found for both model molecules are quite low.
Facultad de Ciencias Exactas
Centro de Investigación y Desarrollo en Ciencias Aplicadas (CINDECA)
Materia
Química
Silver nanoparticles
Zirconia
Hydrocarbons
Diesel soot
Catalytic combustion
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/80684

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network_name_str SEDICI (UNLP)
spelling Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile SourcesMontaña, MaiaLeguizamón Aparicio, María Silvia del ValleOcsachoque, Marco AntonioNavas, Marisa BelénBarros, Ivoneide de C. L.Rodriguez-Castellón, EnriqueCasella, Mónica LauraLick, Ileana DanielaQuímicaSilver nanoparticlesZirconiaHydrocarbonsDiesel sootCatalytic combustionThis work presents the physicochemical characterization and activity of zirconia-supported silver catalysts for the oxidation of pollutants present in diesel engine exhaust (propane, propene, naphthalene and soot). A series of silver-supported catalysts AgxZ (x = 1, 5 and 10 wt.%, Z = zirconia) were prepared, which were studied by various characterization techniques. The results show that silver is mainly found under the form of small metal nanoparticles (<10 nm) dispersed over the support. The metallic phase coexists with the AgOx oxidic phases. Silver is introduced onto the zirconia, generating Ag–ZrO2 catalysts with high activity for the oxidation of propene and naphthalene. These catalysts also show some activity for soot combustion. Silver species can contribute with zirconia in the catalytic redox cycle, through a synergistic effect, providing sites that facilitate the migration and availability of oxygen, which is favored by the presence of structural defects. This is a novel application of the AgOx–Ag/ZrO2 system in the combustion reaction of propene and naphthalene. The results are highly promising, given that the T50 values found for both model molecules are quite low.Facultad de Ciencias ExactasCentro de Investigación y Desarrollo en Ciencias Aplicadas (CINDECA)2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/80684enginfo:eu-repo/semantics/altIdentifier/issn/2073-4344info:eu-repo/semantics/altIdentifier/doi/10.3390/catal9030297info:eu-repo/semantics/altIdentifier/hdl/11746/9201info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:47:08Zoai:sedici.unlp.edu.ar:10915/80684Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:47:09.209SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources
title Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources
spellingShingle Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources
Montaña, Maia
Química
Silver nanoparticles
Zirconia
Hydrocarbons
Diesel soot
Catalytic combustion
title_short Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources
title_full Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources
title_fullStr Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources
title_full_unstemmed Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources
title_sort Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources
dc.creator.none.fl_str_mv Montaña, Maia
Leguizamón Aparicio, María Silvia del Valle
Ocsachoque, Marco Antonio
Navas, Marisa Belén
Barros, Ivoneide de C. L.
Rodriguez-Castellón, Enrique
Casella, Mónica Laura
Lick, Ileana Daniela
author Montaña, Maia
author_facet Montaña, Maia
Leguizamón Aparicio, María Silvia del Valle
Ocsachoque, Marco Antonio
Navas, Marisa Belén
Barros, Ivoneide de C. L.
Rodriguez-Castellón, Enrique
Casella, Mónica Laura
Lick, Ileana Daniela
author_role author
author2 Leguizamón Aparicio, María Silvia del Valle
Ocsachoque, Marco Antonio
Navas, Marisa Belén
Barros, Ivoneide de C. L.
Rodriguez-Castellón, Enrique
Casella, Mónica Laura
Lick, Ileana Daniela
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Química
Silver nanoparticles
Zirconia
Hydrocarbons
Diesel soot
Catalytic combustion
topic Química
Silver nanoparticles
Zirconia
Hydrocarbons
Diesel soot
Catalytic combustion
dc.description.none.fl_txt_mv This work presents the physicochemical characterization and activity of zirconia-supported silver catalysts for the oxidation of pollutants present in diesel engine exhaust (propane, propene, naphthalene and soot). A series of silver-supported catalysts AgxZ (x = 1, 5 and 10 wt.%, Z = zirconia) were prepared, which were studied by various characterization techniques. The results show that silver is mainly found under the form of small metal nanoparticles (<10 nm) dispersed over the support. The metallic phase coexists with the AgOx oxidic phases. Silver is introduced onto the zirconia, generating Ag–ZrO2 catalysts with high activity for the oxidation of propene and naphthalene. These catalysts also show some activity for soot combustion. Silver species can contribute with zirconia in the catalytic redox cycle, through a synergistic effect, providing sites that facilitate the migration and availability of oxygen, which is favored by the presence of structural defects. This is a novel application of the AgOx–Ag/ZrO2 system in the combustion reaction of propene and naphthalene. The results are highly promising, given that the T50 values found for both model molecules are quite low.
Facultad de Ciencias Exactas
Centro de Investigación y Desarrollo en Ciencias Aplicadas (CINDECA)
description This work presents the physicochemical characterization and activity of zirconia-supported silver catalysts for the oxidation of pollutants present in diesel engine exhaust (propane, propene, naphthalene and soot). A series of silver-supported catalysts AgxZ (x = 1, 5 and 10 wt.%, Z = zirconia) were prepared, which were studied by various characterization techniques. The results show that silver is mainly found under the form of small metal nanoparticles (<10 nm) dispersed over the support. The metallic phase coexists with the AgOx oxidic phases. Silver is introduced onto the zirconia, generating Ag–ZrO2 catalysts with high activity for the oxidation of propene and naphthalene. These catalysts also show some activity for soot combustion. Silver species can contribute with zirconia in the catalytic redox cycle, through a synergistic effect, providing sites that facilitate the migration and availability of oxygen, which is favored by the presence of structural defects. This is a novel application of the AgOx–Ag/ZrO2 system in the combustion reaction of propene and naphthalene. The results are highly promising, given that the T50 values found for both model molecules are quite low.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/80684
url http://sedici.unlp.edu.ar/handle/10915/80684
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2073-4344
info:eu-repo/semantics/altIdentifier/doi/10.3390/catal9030297
info:eu-repo/semantics/altIdentifier/hdl/11746/9201
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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