H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems

A new approach for understanding PrOx reaction over gold catalysts is proposed in this work. The competition between H2 and CO oxidation has been studied over a series of Au/MOx/Al2O3 (M = Ce and Co) catalysts in simulated post-reforming gas stream, containing H2O and CO2 for H2 cleanup goals. The c...

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Autores: Ramírez Reina, Tomás, Megías Sayago, Cristina, Pérez Flórez, Alejandro, Ivanova, Svetlana, Centeno Gallego, Miguel Ángel, Odriozola Gordón, José Antonio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/153399
Acceso en línea:https://hdl.handle.net/11441/153399
https://doi.org/10.1016/j.jcat.2015.03.015
Access Level:acceso abierto
Palabra clave:CO removal
Gold catalysts
H2 oxidation
PrOx
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spelling H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systemsRamírez Reina, TomásMegías Sayago, CristinaPérez Flórez, AlejandroIvanova, SvetlanaCenteno Gallego, Miguel ÁngelOdriozola Gordón, José AntonioCO removalGold catalystsH2 oxidationPrOxA new approach for understanding PrOx reaction over gold catalysts is proposed in this work. The competition between H2 and CO oxidation has been studied over a series of Au/MOx/Al2O3 (M = Ce and Co) catalysts in simulated post-reforming gas stream, containing H2O and CO2 for H2 cleanup goals. The catalysts' behavior is correlated to their oxygen storage capacity, redox behavior, and oxidation ability. The estimation of the reaction rates reveals that in these solids the H2 combustion, the selectivity limiting factor in the PrOx process, is mainly controlled by the support and not by the gold presence. The possible use of the hydrogen oxidation reaction as a catalyst selection criterion is discussed.Ministerio de Ciencia e Innovación ENE2012-374301-C03-01Junta de Andalucía TEP-8196ElsevierQuímica InorgánicaMinisterio de Ciencia e Innovación (MICIN). EspañaJunta de Andalucía2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/153399https://doi.org/10.1016/j.jcat.2015.03.015reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of Catalysis, 326, 161-171.ENE2012-374301-C03-01TEP-8196https://doi.org/10.1016/j.jcat.2015.03.015info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1533992026-06-17T12:51:07Z
dc.title.none.fl_str_mv H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems
title H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems
spellingShingle H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems
Ramírez Reina, Tomás
CO removal
Gold catalysts
H2 oxidation
PrOx
title_short H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems
title_full H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems
title_fullStr H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems
title_full_unstemmed H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems
title_sort H2 oxidation as criterion for PrOx catalyst selection: Examples based on Au-CoOx-supported systems
dc.creator.none.fl_str_mv Ramírez Reina, Tomás
Megías Sayago, Cristina
Pérez Flórez, Alejandro
Ivanova, Svetlana
Centeno Gallego, Miguel Ángel
Odriozola Gordón, José Antonio
author Ramírez Reina, Tomás
author_facet Ramírez Reina, Tomás
Megías Sayago, Cristina
Pérez Flórez, Alejandro
Ivanova, Svetlana
Centeno Gallego, Miguel Ángel
Odriozola Gordón, José Antonio
author_role author
author2 Megías Sayago, Cristina
Pérez Flórez, Alejandro
Ivanova, Svetlana
Centeno Gallego, Miguel Ángel
Odriozola Gordón, José Antonio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Química Inorgánica
Ministerio de Ciencia e Innovación (MICIN). España
Junta de Andalucía
dc.subject.none.fl_str_mv CO removal
Gold catalysts
H2 oxidation
PrOx
topic CO removal
Gold catalysts
H2 oxidation
PrOx
description A new approach for understanding PrOx reaction over gold catalysts is proposed in this work. The competition between H2 and CO oxidation has been studied over a series of Au/MOx/Al2O3 (M = Ce and Co) catalysts in simulated post-reforming gas stream, containing H2O and CO2 for H2 cleanup goals. The catalysts' behavior is correlated to their oxygen storage capacity, redox behavior, and oxidation ability. The estimation of the reaction rates reveals that in these solids the H2 combustion, the selectivity limiting factor in the PrOx process, is mainly controlled by the support and not by the gold presence. The possible use of the hydrogen oxidation reaction as a catalyst selection criterion is discussed.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/153399
https://doi.org/10.1016/j.jcat.2015.03.015
url https://hdl.handle.net/11441/153399
https://doi.org/10.1016/j.jcat.2015.03.015
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Catalysis, 326, 161-171.
ENE2012-374301-C03-01
TEP-8196
https://doi.org/10.1016/j.jcat.2015.03.015
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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