Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts study

A conventional Pt/CeO2/Al2O3 catalyst physically mixed with an ionic conductor (Mo-or Eu-doped ZrO2) was tested at high space velocity (20,000 h−1 and 80 L h−1 gcat−1) under model conditions (only with CO and H2O) and industrial conditions, with a realistic feed. The promoted system with the ionic c...

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Authors: Jurado, Lole, García Moncada, Nuria, Bobadilla Baladrón, Luis Francisco, Romero Sarria, Francisca, Odriozola Gordón, José Antonio
Format: article
Status:Published version
Publication Date:2020
Country:España
Institution:Universidad de Sevilla (US)
Repository:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/101076
Online Access:https://hdl.handle.net/11441/101076
https://doi.org/10.3390/catal10080841
Access Level:Open access
Keyword:Grotthuss’ mechanism
Operando DRIFTS
Proton conductor
Water activation
WGS reaction
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spelling Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts studyJurado, LoleGarcía Moncada, NuriaBobadilla Baladrón, Luis FranciscoRomero Sarria, FranciscaOdriozola Gordón, José AntonioGrotthuss’ mechanismOperando DRIFTSProton conductorWater activationWGS reactionA conventional Pt/CeO2/Al2O3 catalyst physically mixed with an ionic conductor (Mo-or Eu-doped ZrO2) was tested at high space velocity (20,000 h−1 and 80 L h−1 gcat−1) under model conditions (only with CO and H2O) and industrial conditions, with a realistic feed. The promoted system with the ionic conductor physically mixed showed better catalytic activity associated with better water dissociation and mobility, considered as a rate-determining step. The water activation was assessed by operando diffuse reflectance infrared fourier transformed spectroscopy (DRIFTS) studies under reaction conditions and the Mo-containing ionic conductor exhibited the presence of both dissociated (3724 cm−1) and physisorbed (5239 cm−1) water on the Eu-doped ZrO2 solid solution, which supports the appearance of proton conductivity by Grotthuss mechanism. Moreover, the band at 3633 cm−1 ascribed to hydrated Mo oxide, which increases with the temperature, explains the increase of catalytic activity when the physical mixture was used in a water gas shift (WGS) reaction.Ministerio de Ciencia, Innovación y Universidades ENE2015-66975-C3-2-R, RTI2018-096294-B-C3Multidisciplinary Digital Publishing Institute (MDPI)Química Inorgánica2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/101076https://doi.org/10.3390/catal10080841reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésCatalysts, 10 (8), 841-.ENE2015-66975-C3-2-RRTI2018-096294-B-C3https://doi.org/10.3390/catal10080841info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1010762026-06-17T12:51:07Z
dc.title.none.fl_str_mv Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts study
title Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts study
spellingShingle Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts study
Jurado, Lole
Grotthuss’ mechanism
Operando DRIFTS
Proton conductor
Water activation
WGS reaction
title_short Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts study
title_full Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts study
title_fullStr Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts study
title_full_unstemmed Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts study
title_sort Elucidation of water promoter effect of proton conductor in wgs reaction over pt-based catalyst: An operando drifts study
dc.creator.none.fl_str_mv Jurado, Lole
García Moncada, Nuria
Bobadilla Baladrón, Luis Francisco
Romero Sarria, Francisca
Odriozola Gordón, José Antonio
author Jurado, Lole
author_facet Jurado, Lole
García Moncada, Nuria
Bobadilla Baladrón, Luis Francisco
Romero Sarria, Francisca
Odriozola Gordón, José Antonio
author_role author
author2 García Moncada, Nuria
Bobadilla Baladrón, Luis Francisco
Romero Sarria, Francisca
Odriozola Gordón, José Antonio
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Química Inorgánica
dc.subject.none.fl_str_mv Grotthuss’ mechanism
Operando DRIFTS
Proton conductor
Water activation
WGS reaction
topic Grotthuss’ mechanism
Operando DRIFTS
Proton conductor
Water activation
WGS reaction
description A conventional Pt/CeO2/Al2O3 catalyst physically mixed with an ionic conductor (Mo-or Eu-doped ZrO2) was tested at high space velocity (20,000 h−1 and 80 L h−1 gcat−1) under model conditions (only with CO and H2O) and industrial conditions, with a realistic feed. The promoted system with the ionic conductor physically mixed showed better catalytic activity associated with better water dissociation and mobility, considered as a rate-determining step. The water activation was assessed by operando diffuse reflectance infrared fourier transformed spectroscopy (DRIFTS) studies under reaction conditions and the Mo-containing ionic conductor exhibited the presence of both dissociated (3724 cm−1) and physisorbed (5239 cm−1) water on the Eu-doped ZrO2 solid solution, which supports the appearance of proton conductivity by Grotthuss mechanism. Moreover, the band at 3633 cm−1 ascribed to hydrated Mo oxide, which increases with the temperature, explains the increase of catalytic activity when the physical mixture was used in a water gas shift (WGS) reaction.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/101076
https://doi.org/10.3390/catal10080841
url https://hdl.handle.net/11441/101076
https://doi.org/10.3390/catal10080841
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Catalysts, 10 (8), 841-.
ENE2015-66975-C3-2-R
RTI2018-096294-B-C3
https://doi.org/10.3390/catal10080841
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 Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
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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