Selective CO methanation with structured RuO2/Al2O3 catalysts

Active and selective structured RuO2/Al2O3 catalysts for CO methanation using a flow simulating CO2-rich reformate gases from WGS and PROX units (H2 excess, CO2 presence and 300 ppm CO concentration) were prepared. Both, the RuO2/Al2O3 powder and the slurry prepared from it for its structuration by...

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Detalhes bibliográficos
Autores: Muñoz Murillo, Ara, Martínez Tejada, Leidy Marcela, Domínguez Leal, María Isabel, Odriozola Gordón, José Antonio, Centeno Gallego, Miguel Ángel
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Recursos:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/144357
Acesso em linha:https://hdl.handle.net/11441/144357
https://doi.org/10.1016/j.apcatb.2018.05.020
Access Level:acceso abierto
Palavra-chave:RuO2/Al2O3
Fecralloy micromonolith
CO and CO2 methanation
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spelling Selective CO methanation with structured RuO2/Al2O3 catalystsMuñoz Murillo, AraMartínez Tejada, Leidy MarcelaDomínguez Leal, María IsabelOdriozola Gordón, José AntonioCenteno Gallego, Miguel ÁngelRuO2/Al2O3Fecralloy micromonolithCO and CO2 methanationActive and selective structured RuO2/Al2O3 catalysts for CO methanation using a flow simulating CO2-rich reformate gases from WGS and PROX units (H2 excess, CO2 presence and 300 ppm CO concentration) were prepared. Both, the RuO2/Al2O3 powder and the slurry prepared from it for its structuration by washcoating of the metallic micromonolithic structure, were also active and selective. Both the slurry (S-RuAl) and micro- monoliths (M-RuAl) were able to completely and selectively methanate CO at much lower temperatures than the parent RuAl powder. The optimal working temperature in which the CO conversion is maximum and the CO2 conversion is minimized was determined to be from 149 °C to 239 °C for S-RuAl and from 165 °C to 232 °C for M- RuAl, whilst it was from 217 °C to 226 °C for RuAl powder. TPR, XRD and TEM measurements confirmed that the changes in the activity and selectivity for CO methanation among the considered catalysts can be related with modifications in the surface particle size of ruthenium and its reducibility. These were ascribed to the metallic substrate, the presence of PVA and colloidal alumina in the slurry preparation, the aqueous and acidic media and the thermal treatment used, resulting in a more active and selective catalysts than the parent powder.Ministerio de Economía y Competitividad de España y fondos europeos FEDER-ENE2012- 37431-C03-03Junta 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/11441/144357https://doi.org/10.1016/j.apcatb.2018.05.020reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésApplied Catalysis B: Environmental, 236, 420-427.ENE2012- 37431-C03-03TEP-8196https://doi.org/10.1016/j.apcatb.2018.05.020info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1443572026-06-17T12:51:07Z
dc.title.none.fl_str_mv Selective CO methanation with structured RuO2/Al2O3 catalysts
title Selective CO methanation with structured RuO2/Al2O3 catalysts
spellingShingle Selective CO methanation with structured RuO2/Al2O3 catalysts
Muñoz Murillo, Ara
RuO2/Al2O3
Fecralloy micromonolith
CO and CO2 methanation
title_short Selective CO methanation with structured RuO2/Al2O3 catalysts
title_full Selective CO methanation with structured RuO2/Al2O3 catalysts
title_fullStr Selective CO methanation with structured RuO2/Al2O3 catalysts
title_full_unstemmed Selective CO methanation with structured RuO2/Al2O3 catalysts
title_sort Selective CO methanation with structured RuO2/Al2O3 catalysts
dc.creator.none.fl_str_mv Muñoz Murillo, Ara
Martínez Tejada, Leidy Marcela
Domínguez Leal, María Isabel
Odriozola Gordón, José Antonio
Centeno Gallego, Miguel Ángel
author Muñoz Murillo, Ara
author_facet Muñoz Murillo, Ara
Martínez Tejada, Leidy Marcela
Domínguez Leal, María Isabel
Odriozola Gordón, José Antonio
Centeno Gallego, Miguel Ángel
author_role author
author2 Martínez Tejada, Leidy Marcela
Domínguez Leal, María Isabel
Odriozola Gordón, José Antonio
Centeno Gallego, Miguel Ángel
author2_role 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 RuO2/Al2O3
Fecralloy micromonolith
CO and CO2 methanation
topic RuO2/Al2O3
Fecralloy micromonolith
CO and CO2 methanation
description Active and selective structured RuO2/Al2O3 catalysts for CO methanation using a flow simulating CO2-rich reformate gases from WGS and PROX units (H2 excess, CO2 presence and 300 ppm CO concentration) were prepared. Both, the RuO2/Al2O3 powder and the slurry prepared from it for its structuration by washcoating of the metallic micromonolithic structure, were also active and selective. Both the slurry (S-RuAl) and micro- monoliths (M-RuAl) were able to completely and selectively methanate CO at much lower temperatures than the parent RuAl powder. The optimal working temperature in which the CO conversion is maximum and the CO2 conversion is minimized was determined to be from 149 °C to 239 °C for S-RuAl and from 165 °C to 232 °C for M- RuAl, whilst it was from 217 °C to 226 °C for RuAl powder. TPR, XRD and TEM measurements confirmed that the changes in the activity and selectivity for CO methanation among the considered catalysts can be related with modifications in the surface particle size of ruthenium and its reducibility. These were ascribed to the metallic substrate, the presence of PVA and colloidal alumina in the slurry preparation, the aqueous and acidic media and the thermal treatment used, resulting in a more active and selective catalysts than the parent powder.
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/11441/144357
https://doi.org/10.1016/j.apcatb.2018.05.020
url https://hdl.handle.net/11441/144357
https://doi.org/10.1016/j.apcatb.2018.05.020
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Applied Catalysis B: Environmental, 236, 420-427.
ENE2012- 37431-C03-03
TEP-8196
https://doi.org/10.1016/j.apcatb.2018.05.020
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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score 15.300724

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