Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition

Autores
del Río, Eloy; Collins, Sebastián Enrique; Aguirre, Alejo; Chen, Xiaowei; Delgado, Juan Jose; Calvino, Jose Juan; Bernal, Serafín
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Highly active supported gold catalysts frequently undergo substantial decrease in activity due to deactivation. The aim of this paper is to investigate a reversible inhibition phenomenon of the CO oxidation in an Au/Ce0.62Zr0.38O2 (Au/CZ) catalyst. The results of a systematic study of CO oxidation conditions (CO, O2, and CO2) are discussed. By identifying CO2 as an Au/CZ poison using isotopic transient analysis (13CO/12CO2), we also investigate the origin of inhibition activity by transient and modulated infrared spectroscopy in DRIFT mode. Results demonstrate that carbonate species are formed by reaction of CO2 with reactive lattice oxygen at the metal-support interphase, which in turn inhibits the replenishment of the vacancies by molecular oxygen. A microkinetic model that accounts for the reaction mechanism and inhibition by CO2 is proposed.
Fil: del Río, Eloy. Universidad de Cádiz; España
Fil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Aguirre, Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Chen, Xiaowei. Universidad de Cádiz; España
Fil: Delgado, Juan Jose. Universidad de Cádiz; España
Fil: Calvino, Jose Juan. Universidad de Cádiz; España
Fil: Bernal, Serafín. Universidad de Cádiz; España
Materia
Gold Catalysis
Co Oxidation
Deactivation
Carbonate Species
Co2 Poisoning
Ms Isotopic Analysis
Drift
Mes
Reaction Mechanism
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/22404
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/22404
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibitiondel Río, EloyCollins, Sebastián EnriqueAguirre, AlejoChen, XiaoweiDelgado, Juan JoseCalvino, Jose JuanBernal, SerafínGold CatalysisCo OxidationDeactivationCarbonate SpeciesCo2 PoisoningMs Isotopic AnalysisDriftMesReaction Mechanismhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Highly active supported gold catalysts frequently undergo substantial decrease in activity due to deactivation. The aim of this paper is to investigate a reversible inhibition phenomenon of the CO oxidation in an Au/Ce0.62Zr0.38O2 (Au/CZ) catalyst. The results of a systematic study of CO oxidation conditions (CO, O2, and CO2) are discussed. By identifying CO2 as an Au/CZ poison using isotopic transient analysis (13CO/12CO2), we also investigate the origin of inhibition activity by transient and modulated infrared spectroscopy in DRIFT mode. Results demonstrate that carbonate species are formed by reaction of CO2 with reactive lattice oxygen at the metal-support interphase, which in turn inhibits the replenishment of the vacancies by molecular oxygen. A microkinetic model that accounts for the reaction mechanism and inhibition by CO2 is proposed.Fil: del Río, Eloy. Universidad de Cádiz; EspañaFil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Aguirre, Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Chen, Xiaowei. Universidad de Cádiz; EspañaFil: Delgado, Juan Jose. Universidad de Cádiz; EspañaFil: Calvino, Jose Juan. Universidad de Cádiz; EspañaFil: Bernal, Serafín. Universidad de Cádiz; EspañaElsevier Inc2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22404del Río, Eloy; Collins, Sebastián Enrique; Aguirre, Alejo; Chen, Xiaowei; Delgado, Juan Jose; et al.; Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition; Elsevier Inc; Journal of Catalysis; 316; 6-2014; 210-2180021-9517CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcat.2014.05.016info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0021951714001377info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:08:09Zoai:ri.conicet.gov.ar:11336/22404instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:08:09.566CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition
title Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition
spellingShingle Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition
del Río, Eloy
Gold Catalysis
Co Oxidation
Deactivation
Carbonate Species
Co2 Poisoning
Ms Isotopic Analysis
Drift
Mes
Reaction Mechanism
title_short Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition
title_full Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition
title_fullStr Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition
title_full_unstemmed Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition
title_sort Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition
dc.creator.none.fl_str_mv del Río, Eloy
Collins, Sebastián Enrique
Aguirre, Alejo
Chen, Xiaowei
Delgado, Juan Jose
Calvino, Jose Juan
Bernal, Serafín
author del Río, Eloy
author_facet del Río, Eloy
Collins, Sebastián Enrique
Aguirre, Alejo
Chen, Xiaowei
Delgado, Juan Jose
Calvino, Jose Juan
Bernal, Serafín
author_role author
author2 Collins, Sebastián Enrique
Aguirre, Alejo
Chen, Xiaowei
Delgado, Juan Jose
Calvino, Jose Juan
Bernal, Serafín
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Gold Catalysis
Co Oxidation
Deactivation
Carbonate Species
Co2 Poisoning
Ms Isotopic Analysis
Drift
Mes
Reaction Mechanism
topic Gold Catalysis
Co Oxidation
Deactivation
Carbonate Species
Co2 Poisoning
Ms Isotopic Analysis
Drift
Mes
Reaction Mechanism
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Highly active supported gold catalysts frequently undergo substantial decrease in activity due to deactivation. The aim of this paper is to investigate a reversible inhibition phenomenon of the CO oxidation in an Au/Ce0.62Zr0.38O2 (Au/CZ) catalyst. The results of a systematic study of CO oxidation conditions (CO, O2, and CO2) are discussed. By identifying CO2 as an Au/CZ poison using isotopic transient analysis (13CO/12CO2), we also investigate the origin of inhibition activity by transient and modulated infrared spectroscopy in DRIFT mode. Results demonstrate that carbonate species are formed by reaction of CO2 with reactive lattice oxygen at the metal-support interphase, which in turn inhibits the replenishment of the vacancies by molecular oxygen. A microkinetic model that accounts for the reaction mechanism and inhibition by CO2 is proposed.
Fil: del Río, Eloy. Universidad de Cádiz; España
Fil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Aguirre, Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Chen, Xiaowei. Universidad de Cádiz; España
Fil: Delgado, Juan Jose. Universidad de Cádiz; España
Fil: Calvino, Jose Juan. Universidad de Cádiz; España
Fil: Bernal, Serafín. Universidad de Cádiz; España
description Highly active supported gold catalysts frequently undergo substantial decrease in activity due to deactivation. The aim of this paper is to investigate a reversible inhibition phenomenon of the CO oxidation in an Au/Ce0.62Zr0.38O2 (Au/CZ) catalyst. The results of a systematic study of CO oxidation conditions (CO, O2, and CO2) are discussed. By identifying CO2 as an Au/CZ poison using isotopic transient analysis (13CO/12CO2), we also investigate the origin of inhibition activity by transient and modulated infrared spectroscopy in DRIFT mode. Results demonstrate that carbonate species are formed by reaction of CO2 with reactive lattice oxygen at the metal-support interphase, which in turn inhibits the replenishment of the vacancies by molecular oxygen. A microkinetic model that accounts for the reaction mechanism and inhibition by CO2 is proposed.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/22404
del Río, Eloy; Collins, Sebastián Enrique; Aguirre, Alejo; Chen, Xiaowei; Delgado, Juan Jose; et al.; Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition; Elsevier Inc; Journal of Catalysis; 316; 6-2014; 210-218
0021-9517
CONICET Digital
CONICET
url http://hdl.handle.net/11336/22404
identifier_str_mv del Río, Eloy; Collins, Sebastián Enrique; Aguirre, Alejo; Chen, Xiaowei; Delgado, Juan Jose; et al.; Reversible deactivation of a Au/Ce0.62Zr0.38O2 catalyst in CO oxidation: A systematic study of CO2-triggered carbonate inhibition; Elsevier Inc; Journal of Catalysis; 316; 6-2014; 210-218
0021-9517
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcat.2014.05.016
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0021951714001377
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Inc
publisher.none.fl_str_mv Elsevier Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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