Insights into palladium deactivation during advanced oxidation processes

A key step in creating efficient and long-lasting catalysts is understanding their deactivation mechanism(s). On this basis, the behavior of a series of Pd/corundum materials during several hydrogen adsorption/desorption cycles was studied using temperature-programmed desorption coupled with mass sp...

Descripción completa

Detalles Bibliográficos
Autores: Pinos Vélez, Verónica, Osegueda, O., Crivoi, Dana-Georgiana, Llorca Piqué, Jordi|||0000-0002-7447-9582, García García, Francisco Javier, Alvarez, Mayra G, Medina Cabello, Francisco, Dafinov, Antonio
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/382755
Acceso en línea:https://hdl.handle.net/2117/382755
https://dx.doi.org/10.1021/acs.chemmater.2c01951
Access Level:acceso abierto
Palabra clave:Hydrogen
Catalysis
Mass spectrometry
Materials
Metal nanoparticles
Palladium
Hidrogen
Catàlisi
Àrees temàtiques de la UPC::Enginyeria química::Química física::Estructura molecular
id ES_0ae8eb45cebca6f144fbe345b3e145f4
oai_identifier_str oai:upcommons.upc.edu:2117/382755
network_acronym_str ES
network_name_str España
repository_id_str
spelling Insights into palladium deactivation during advanced oxidation processesPinos Vélez, VerónicaOsegueda, O.Crivoi, Dana-GeorgianaLlorca Piqué, Jordi|||0000-0002-7447-9582García García, Francisco JavierAlvarez, Mayra GMedina Cabello, FranciscoDafinov, AntonioHydrogenCatalysisHydrogenMass spectrometryMaterialsMetal nanoparticlesPalladiumHidrogenCatàlisiÀrees temàtiques de la UPC::Enginyeria química::Química física::Estructura molecularA key step in creating efficient and long-lasting catalysts is understanding their deactivation mechanism(s). On this basis, the behavior of a series of Pd/corundum materials during several hydrogen adsorption/desorption cycles was studied using temperature-programmed desorption coupled with mass spectrometry and aberration-corrected transmission electron microscopy. The materials, prepared by impregnation and by sputtering, presented uniform well-dispersed Pd nanoparticles. In addition, single atoms and small clusters of Pd were only detected in the materials prepared by impregnation. Upon exposure to hydrogen, the Pd nanoparticles smaller than 2 nm and the single atoms did not present any change, while the larger ones presented a core–shell morphology, where the core was Pd and the shell was PdHx. The results suggest that the long-term activity of the materials prepared by impregnation can be attributed solely to the presence of small clusters and single atoms of Pd.Peer ReviewedAmerican Chemical Society20222022-09-2820232023-02-09journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/382755https://dx.doi.org/10.1021/acs.chemmater.2c01951reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3827552026-05-27T15:37:01Z
dc.title.none.fl_str_mv Insights into palladium deactivation during advanced oxidation processes
title Insights into palladium deactivation during advanced oxidation processes
spellingShingle Insights into palladium deactivation during advanced oxidation processes
Pinos Vélez, Verónica
Hydrogen
Catalysis
Hydrogen
Mass spectrometry
Materials
Metal nanoparticles
Palladium
Hidrogen
Catàlisi
Àrees temàtiques de la UPC::Enginyeria química::Química física::Estructura molecular
title_short Insights into palladium deactivation during advanced oxidation processes
title_full Insights into palladium deactivation during advanced oxidation processes
title_fullStr Insights into palladium deactivation during advanced oxidation processes
title_full_unstemmed Insights into palladium deactivation during advanced oxidation processes
title_sort Insights into palladium deactivation during advanced oxidation processes
dc.creator.none.fl_str_mv Pinos Vélez, Verónica
Osegueda, O.
Crivoi, Dana-Georgiana
Llorca Piqué, Jordi|||0000-0002-7447-9582
García García, Francisco Javier
Alvarez, Mayra G
Medina Cabello, Francisco
Dafinov, Antonio
author Pinos Vélez, Verónica
author_facet Pinos Vélez, Verónica
Osegueda, O.
Crivoi, Dana-Georgiana
Llorca Piqué, Jordi|||0000-0002-7447-9582
García García, Francisco Javier
Alvarez, Mayra G
Medina Cabello, Francisco
Dafinov, Antonio
author_role author
author2 Osegueda, O.
Crivoi, Dana-Georgiana
Llorca Piqué, Jordi|||0000-0002-7447-9582
García García, Francisco Javier
Alvarez, Mayra G
Medina Cabello, Francisco
Dafinov, Antonio
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Hydrogen
Catalysis
Hydrogen
Mass spectrometry
Materials
Metal nanoparticles
Palladium
Hidrogen
Catàlisi
Àrees temàtiques de la UPC::Enginyeria química::Química física::Estructura molecular
topic Hydrogen
Catalysis
Hydrogen
Mass spectrometry
Materials
Metal nanoparticles
Palladium
Hidrogen
Catàlisi
Àrees temàtiques de la UPC::Enginyeria química::Química física::Estructura molecular
description A key step in creating efficient and long-lasting catalysts is understanding their deactivation mechanism(s). On this basis, the behavior of a series of Pd/corundum materials during several hydrogen adsorption/desorption cycles was studied using temperature-programmed desorption coupled with mass spectrometry and aberration-corrected transmission electron microscopy. The materials, prepared by impregnation and by sputtering, presented uniform well-dispersed Pd nanoparticles. In addition, single atoms and small clusters of Pd were only detected in the materials prepared by impregnation. Upon exposure to hydrogen, the Pd nanoparticles smaller than 2 nm and the single atoms did not present any change, while the larger ones presented a core–shell morphology, where the core was Pd and the shell was PdHx. The results suggest that the long-term activity of the materials prepared by impregnation can be attributed solely to the presence of small clusters and single atoms of Pd.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-09-28
2023
2023-02-09
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/382755
https://dx.doi.org/10.1021/acs.chemmater.2c01951
url https://hdl.handle.net/2117/382755
https://dx.doi.org/10.1021/acs.chemmater.2c01951
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869403191089561600
score 15.300724

Similares en LA Referencia