Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications

A commercial Pt based washcoat, used for catalytic methane combustion, was studied supported on a commercial SiC foam as catalytic material (Pt/SiC) for catalytic hydrogen combustion (CHC). Structural and chemical characterization was performed using Electron Microscopy, X-Ray Diffraction (XRD) and...

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Autores: Fernández-Camacho, A., Arzac, G.M., Vogt, U.F., Hosoglu, F., Borgschulte, A., Jiménez de Haro, María del Carmen, Montes, O., Züttel, A.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/121037
Acceso en línea:http://hdl.handle.net/10261/121037
Access Level:acceso abierto
Palabra clave:Hydrogen
Catalytic combustion
FTIR
Pt-washcoat
SiC ceramic foam
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spelling Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applicationsFernández-Camacho, A.Arzac, G.M.Vogt, U.F.Hosoglu, F.Borgschulte, A.Jiménez de Haro, María del CarmenMontes, O.Züttel, A.HydrogenCatalytic combustionFTIRPt-washcoatSiC ceramic foamA commercial Pt based washcoat, used for catalytic methane combustion, was studied supported on a commercial SiC foam as catalytic material (Pt/SiC) for catalytic hydrogen combustion (CHC). Structural and chemical characterization was performed using Electron Microscopy, X-Ray Diffraction (XRD) and X-Ray Photoelectron Spectroscopy (XPS). The reaction was monitored following water concentration by Fourier Transform Infrared spectra (FTIR). The FTIR method was compared with H2 detection by Gas Cromatography (GC) and has shown to be adequate to study the kinetics of the CHC reaction in steady state under our experimental conditions (very lean 1% (v/v) H2/air mixtures). The catalyst is composed of 5–20 nm disperse Pt nanoparticles decorating a mixture of high surface area Al2O3 and small amounts of ceria supported on the SiC foam which also contains alumina as binder. The Pt/SiC catalytic material has demonstrated to be active enough to start up the reaction in a few seconds at room temperature. The material has been able to convert at least 18.5 Lhydrogen min−1 gPt−1 at room temperature in conditions of excess of catalyst. The Pt/SiC material was studied after use using XPS and no significant changes on Pt oxidation states were found. The material was characterized from a kinetic point of view. From the conversion-temperature plot a T50 (temperature for 50% conversion) of 34 °C was obtained. Activation energy measured in our conditions was 35 ± 1 kJ mol−1.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201520152016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/121037reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.apcatb.2015.06.040Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1210372026-05-22T06:33:51Z
dc.title.none.fl_str_mv Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications
title Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications
spellingShingle Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications
Fernández-Camacho, A.
Hydrogen
Catalytic combustion
FTIR
Pt-washcoat
SiC ceramic foam
title_short Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications
title_full Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications
title_fullStr Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications
title_full_unstemmed Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications
title_sort Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications
dc.creator.none.fl_str_mv Fernández-Camacho, A.
Arzac, G.M.
Vogt, U.F.
Hosoglu, F.
Borgschulte, A.
Jiménez de Haro, María del Carmen
Montes, O.
Züttel, A.
author Fernández-Camacho, A.
author_facet Fernández-Camacho, A.
Arzac, G.M.
Vogt, U.F.
Hosoglu, F.
Borgschulte, A.
Jiménez de Haro, María del Carmen
Montes, O.
Züttel, A.
author_role author
author2 Arzac, G.M.
Vogt, U.F.
Hosoglu, F.
Borgschulte, A.
Jiménez de Haro, María del Carmen
Montes, O.
Züttel, A.
author2_role author
author
author
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 Hydrogen
Catalytic combustion
FTIR
Pt-washcoat
SiC ceramic foam
topic Hydrogen
Catalytic combustion
FTIR
Pt-washcoat
SiC ceramic foam
description A commercial Pt based washcoat, used for catalytic methane combustion, was studied supported on a commercial SiC foam as catalytic material (Pt/SiC) for catalytic hydrogen combustion (CHC). Structural and chemical characterization was performed using Electron Microscopy, X-Ray Diffraction (XRD) and X-Ray Photoelectron Spectroscopy (XPS). The reaction was monitored following water concentration by Fourier Transform Infrared spectra (FTIR). The FTIR method was compared with H2 detection by Gas Cromatography (GC) and has shown to be adequate to study the kinetics of the CHC reaction in steady state under our experimental conditions (very lean 1% (v/v) H2/air mixtures). The catalyst is composed of 5–20 nm disperse Pt nanoparticles decorating a mixture of high surface area Al2O3 and small amounts of ceria supported on the SiC foam which also contains alumina as binder. The Pt/SiC catalytic material has demonstrated to be active enough to start up the reaction in a few seconds at room temperature. The material has been able to convert at least 18.5 Lhydrogen min−1 gPt−1 at room temperature in conditions of excess of catalyst. The Pt/SiC material was studied after use using XPS and no significant changes on Pt oxidation states were found. The material was characterized from a kinetic point of view. From the conversion-temperature plot a T50 (temperature for 50% conversion) of 34 °C was obtained. Activation energy measured in our conditions was 35 ± 1 kJ mol−1.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015
2016
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/10261/121037
url http://hdl.handle.net/10261/121037
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.apcatb.2015.06.040
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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