Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactions

A novel multilayer approach for designing structured WGS catalyst is employed in this study as a response to the lack of new strategies in the literature. The approach proposes the use of two successive layers with different functionalities on metallic micromonolith substrate. The WGS catalyst behav...

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Autores: González Castaño, Míriam, Saché, E. Le, Ivanova, Svetlana, Romero Sarria, Francisca, Centeno Gallego, Miguel Ángel, Odriozola Gordón, José Antonio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/144153
Acceso en línea:https://hdl.handle.net/11441/144153
https://doi.org/10.1016/j.apcatb.2017.10.018
Access Level:acceso abierto
Palabra clave:Structured WGS catalysts
Metallic monoliths
Ceria
Oxygen vacancy
Water splitting
Water absorption
Water desorption
H2O-TPD
FT-IR
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spelling Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactionsGonzález Castaño, MíriamSaché, E. LeIvanova, SvetlanaRomero Sarria, FranciscaCenteno Gallego, Miguel ÁngelOdriozola Gordón, José AntonioStructured WGS catalystsMetallic monolithsCeriaOxygen vacancyWater splittingWater absorptionWater desorptionH2O-TPDFT-IRA novel multilayer approach for designing structured WGS catalyst is employed in this study as a response to the lack of new strategies in the literature. The approach proposes the use of two successive layers with different functionalities on metallic micromonolith substrate. The WGS catalyst behavior is modulated by the nature of the inner layer which determines the active species surface population by acting on the water activation step. The catalytic promotion attained by introducing inner ceria containing solids with increasing number of oxygen defects is intensely analyzed through FT-IR and H2O-TPD. Several evidences about the participation of the oxygen vacancies, as key sites, for water absorption processes are established. Besides, remarkable relationships between the water absorption strengths and the water splitting processes within their influence on the catalyst performance are also discussed.Ministerio de Economía y Competitividad de España y fondos europeos FEDER-ENE2015-66975-C3-2-RJunta de Andalucía-TEP-8196ElsevierQuímica InorgánicaMinisterio de Economía y Competitividad (MINECO). EspañaEuropean Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)Junta de Andalucía2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/mswordapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/vnd.openxmlformats-officedocument.wordprocessingml.documenthttps://hdl.handle.net/11441/144153https://doi.org/10.1016/j.apcatb.2017.10.018reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésApplied Catalysis B: Environmental, 222, 124-132.ENE2015-66975-C3-2-RTEP-8196https://doi.org/10.1016/j.apcatb.2017.10.018info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1441532026-06-17T12:51:07Z
dc.title.none.fl_str_mv Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactions
title Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactions
spellingShingle Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactions
González Castaño, Míriam
Structured WGS catalysts
Metallic monoliths
Ceria
Oxygen vacancy
Water splitting
Water absorption
Water desorption
H2O-TPD
FT-IR
title_short Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactions
title_full Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactions
title_fullStr Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactions
title_full_unstemmed Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactions
title_sort Tailoring structured WGS catalysts: Impact of multilayered concept on the water surface interactions
dc.creator.none.fl_str_mv González Castaño, Míriam
Saché, E. Le
Ivanova, Svetlana
Romero Sarria, Francisca
Centeno Gallego, Miguel Ángel
Odriozola Gordón, José Antonio
author González Castaño, Míriam
author_facet González Castaño, Míriam
Saché, E. Le
Ivanova, Svetlana
Romero Sarria, Francisca
Centeno Gallego, Miguel Ángel
Odriozola Gordón, José Antonio
author_role author
author2 Saché, E. Le
Ivanova, Svetlana
Romero Sarria, Francisca
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 Economía y Competitividad (MINECO). España
European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)
Junta de Andalucía
dc.subject.none.fl_str_mv Structured WGS catalysts
Metallic monoliths
Ceria
Oxygen vacancy
Water splitting
Water absorption
Water desorption
H2O-TPD
FT-IR
topic Structured WGS catalysts
Metallic monoliths
Ceria
Oxygen vacancy
Water splitting
Water absorption
Water desorption
H2O-TPD
FT-IR
description A novel multilayer approach for designing structured WGS catalyst is employed in this study as a response to the lack of new strategies in the literature. The approach proposes the use of two successive layers with different functionalities on metallic micromonolith substrate. The WGS catalyst behavior is modulated by the nature of the inner layer which determines the active species surface population by acting on the water activation step. The catalytic promotion attained by introducing inner ceria containing solids with increasing number of oxygen defects is intensely analyzed through FT-IR and H2O-TPD. Several evidences about the participation of the oxygen vacancies, as key sites, for water absorption processes are established. Besides, remarkable relationships between the water absorption strengths and the water splitting processes within their influence on the catalyst performance are also discussed.
publishDate 2018
dc.date.none.fl_str_mv 2018
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/11441/144153
https://doi.org/10.1016/j.apcatb.2017.10.018
url https://hdl.handle.net/11441/144153
https://doi.org/10.1016/j.apcatb.2017.10.018
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Applied Catalysis B: Environmental, 222, 124-132.
ENE2015-66975-C3-2-R
TEP-8196
https://doi.org/10.1016/j.apcatb.2017.10.018
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/msword
application/vnd.openxmlformats-officedocument.wordprocessingml.document
application/vnd.openxmlformats-officedocument.wordprocessingml.document
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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