Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reaction

By evaluating the functional modifications induced by Zr and Fe as dopants in Pt/CeO2-MOx/Al2O3 catalysts (M = Fe and Zr), the key features for improving water gas shift (WGS) performance for these systems have been addressed. Pt/ceria intrinsic WGS activity is often related to improved H2 surface d...

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Detalles Bibliográficos
Autores: González-Castaño, Miriam, Ivanova, Svetlana, Centeno, Miguel Ángel, Ioanides, Theophiles, Arellano-García, Harvey, Odriozola, José Antonio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/367946
Acceso en línea:http://hdl.handle.net/10261/367946
https://api.elsevier.com/content/abstract/scopus_id/85102889357
Access Level:acceso abierto
Palabra clave:Doped ceria
Fe
H2-TPD
Pt/ceria catalysts
WGS reaction
WGS-TPSR
Zr
Composite materials
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spelling Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reactionGonzález-Castaño, MiriamIvanova, SvetlanaCenteno, Miguel ÁngelIoanides, TheophilesArellano-García, HarveyOdriozola, José AntonioDoped ceriaFeH2-TPDPt/ceria catalystsWGS reactionWGS-TPSRZrComposite materialsBy evaluating the functional modifications induced by Zr and Fe as dopants in Pt/CeO2-MOx/Al2O3 catalysts (M = Fe and Zr), the key features for improving water gas shift (WGS) performance for these systems have been addressed. Pt/ceria intrinsic WGS activity is often related to improved H2 surface dynamics, H2O absorption, retentions and dissociation capacities which are influenced greatly by the support nature. Two metals, iron and zirconia, were chosen as ceria dopants in this work, either in separate manner or combined. Iron incorporation resulted in CO-redox properties and oxygen storage capacities (OSC) improvement but the formation of Ce-Fe solid solutions did not offer any catalytic benefit, while the Zr incorporation influenced in a great manner surface electron densities and shows higher catalytic activity. When combined both metals showed an important synergy evidenced by 30% higher CO conversions and attributed to greater surface electron densities population and therefore absorption and activity. This work demonstrates that for Pt/ceria catalysts OSC enhancement does not necessarily imply a catalytic promotion.Financial support for this work was obtained from the Spanish Ministerio de Economía y Competitividad (MINECO) (Grant RTI2018‐096294‐B‐C33) co‐financed by FEDER funds from the European Union.Peer reviewedWiley-VCHEuropean CommissionMinisterio de Economía y Competitividad (España)Agencia Estatal de Investigación (España)Centeno, Miguel Ángel [0000-0002-8349-3044]Odriozola, José Antonio [0000-0002-8283-0459]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/367946https://api.elsevier.com/content/abstract/scopus_id/85102889357reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésInternational Journal of Energy Researchhttps://doi.org/10.1002/er.6646Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3679462026-05-22T06:33:51Z
dc.title.none.fl_str_mv Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reaction
title Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reaction
spellingShingle Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reaction
González-Castaño, Miriam
Doped ceria
Fe
H2-TPD
Pt/ceria catalysts
WGS reaction
WGS-TPSR
Zr
Composite materials
title_short Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reaction
title_full Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reaction
title_fullStr Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reaction
title_full_unstemmed Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reaction
title_sort Zr and Fe on Pt/CeO2-MOx/Al2O3 catalysts for WGS reaction
dc.creator.none.fl_str_mv González-Castaño, Miriam
Ivanova, Svetlana
Centeno, Miguel Ángel
Ioanides, Theophiles
Arellano-García, Harvey
Odriozola, José Antonio
author González-Castaño, Miriam
author_facet González-Castaño, Miriam
Ivanova, Svetlana
Centeno, Miguel Ángel
Ioanides, Theophiles
Arellano-García, Harvey
Odriozola, José Antonio
author_role author
author2 Ivanova, Svetlana
Centeno, Miguel Ángel
Ioanides, Theophiles
Arellano-García, Harvey
Odriozola, José Antonio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Ministerio de Economía y Competitividad (España)
Agencia Estatal de Investigación (España)
Centeno, Miguel Ángel [0000-0002-8349-3044]
Odriozola, José Antonio [0000-0002-8283-0459]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Doped ceria
Fe
H2-TPD
Pt/ceria catalysts
WGS reaction
WGS-TPSR
Zr
Composite materials
topic Doped ceria
Fe
H2-TPD
Pt/ceria catalysts
WGS reaction
WGS-TPSR
Zr
Composite materials
description By evaluating the functional modifications induced by Zr and Fe as dopants in Pt/CeO2-MOx/Al2O3 catalysts (M = Fe and Zr), the key features for improving water gas shift (WGS) performance for these systems have been addressed. Pt/ceria intrinsic WGS activity is often related to improved H2 surface dynamics, H2O absorption, retentions and dissociation capacities which are influenced greatly by the support nature. Two metals, iron and zirconia, were chosen as ceria dopants in this work, either in separate manner or combined. Iron incorporation resulted in CO-redox properties and oxygen storage capacities (OSC) improvement but the formation of Ce-Fe solid solutions did not offer any catalytic benefit, while the Zr incorporation influenced in a great manner surface electron densities and shows higher catalytic activity. When combined both metals showed an important synergy evidenced by 30% higher CO conversions and attributed to greater surface electron densities population and therefore absorption and activity. This work demonstrates that for Pt/ceria catalysts OSC enhancement does not necessarily imply a catalytic promotion.
publishDate 2021
dc.date.none.fl_str_mv 2021
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/367946
https://api.elsevier.com/content/abstract/scopus_id/85102889357
url http://hdl.handle.net/10261/367946
https://api.elsevier.com/content/abstract/scopus_id/85102889357
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv International Journal of Energy Research
https://doi.org/10.1002/er.6646
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley-VCH
publisher.none.fl_str_mv Wiley-VCH
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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