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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/80684
Ver los metadatos del registro completo
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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 |
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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) |
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application/pdf |
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