Selective CO methanation with structured RuO2/Al2O3 catalysts

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

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Autores: Muñoz-Murillo, A., Martínez, L.M., Domínguez, M. I., Odriozola, José Antonio, Centeno, Miguel Ángel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/169951
Acceso en línea:http://hdl.handle.net/10261/169951
Access Level:acceso abierto
Palabra clave:RuO2/Al2O3 catalysts
CO2 methanation
CO methanation
Washcoating
Metallic micromonolith
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spelling Selective CO methanation with structured RuO2/Al2O3 catalystsMuñoz-Murillo, A.Martínez, L.M.Domínguez, M. I.Odriozola, José AntonioCenteno, Miguel ÁngelRuO2/Al2O3 catalystsCO2 methanationCO methanationWashcoatingMetallic micromonolithActive and selective structured RuO/AlO catalysts for CO methanation using a flow simulating CO-rich reformate gases from WGS and PROX units (H excess, CO presence and 300 ppm CO concentration) were prepared. Both, the RuO/AlO 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 micromonoliths (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 CO 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.Peer ReviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2018201820182018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/169951reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1699512026-05-22T06:33:51Z
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, A.
RuO2/Al2O3 catalysts
CO2 methanation
CO methanation
Washcoating
Metallic micromonolith
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, A.
Martínez, L.M.
Domínguez, M. I.
Odriozola, José Antonio
Centeno, Miguel Ángel
author Muñoz-Murillo, A.
author_facet Muñoz-Murillo, A.
Martínez, L.M.
Domínguez, M. I.
Odriozola, José Antonio
Centeno, Miguel Ángel
author_role author
author2 Martínez, L.M.
Domínguez, M. I.
Odriozola, José Antonio
Centeno, Miguel Ángel
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv RuO2/Al2O3 catalysts
CO2 methanation
CO methanation
Washcoating
Metallic micromonolith
topic RuO2/Al2O3 catalysts
CO2 methanation
CO methanation
Washcoating
Metallic micromonolith
description Active and selective structured RuO/AlO catalysts for CO methanation using a flow simulating CO-rich reformate gases from WGS and PROX units (H excess, CO presence and 300 ppm CO concentration) were prepared. Both, the RuO/AlO 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 micromonoliths (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 CO 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
2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/169951
url http://hdl.handle.net/10261/169951
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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