Characterization of Pd-CeOx interaction on α-Al2O3 support

Autores
Gigola, Carlos Eugenio; Moreno, Mario Sergio Jesus; Costilla, Ignacio Oscar; Sanchez, Miguel Dario
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Pd-Ce interaction was studied over CeO2 (0.3-2.5 wt.%)-Pd (1 wt.%)/α-Al2O3 catalysts used in the reforming reaction of CH4 with CO2. The samples were characterized by using high resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). The activity and selectivity behavior was in good agreement with that of other supported metal catalysts (Ni and Pd) modified with different promoters. The preliminary results of HRTEM would indicate that the CeOx forms small crystallites around the Pd particle. The XPS analysis for the regions of Ce 3d and Pd 3d, gives an account of Ce being present mostly as Ce3+ and a high binding energy for Pd 3d5/2 (335.3 eV), an evidence of Pd-Ce chemical interaction. The Pd/Al XPS intensity ratios vs. the Pd average particle size, determined by TEM, show an excellent correlation for fresh and used catalyst. These results indicate that the diminution of the Pd/Al ratios was due to Pd sintering. Consequently, the small amounts of CeOx species do not cover the Pd particle, in agreement with the HRTEM results. The overall results stand for the promoter action mechanism of the CeOx for the reforming reaction with CO2.
Fil: Gigola, Carlos Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Moreno, Mario Sergio Jesus. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Costilla, Ignacio Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Sanchez, Miguel Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Materia
Catalyst
Cerium
Methane Reforming Whit Carbon Dioxide
Palladium
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/70693
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/70693
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Characterization of Pd-CeOx interaction on α-Al2O3 supportGigola, Carlos EugenioMoreno, Mario Sergio JesusCostilla, Ignacio OscarSanchez, Miguel DarioCatalystCeriumMethane Reforming Whit Carbon DioxidePalladiumhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The Pd-Ce interaction was studied over CeO2 (0.3-2.5 wt.%)-Pd (1 wt.%)/α-Al2O3 catalysts used in the reforming reaction of CH4 with CO2. The samples were characterized by using high resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). The activity and selectivity behavior was in good agreement with that of other supported metal catalysts (Ni and Pd) modified with different promoters. The preliminary results of HRTEM would indicate that the CeOx forms small crystallites around the Pd particle. The XPS analysis for the regions of Ce 3d and Pd 3d, gives an account of Ce being present mostly as Ce3+ and a high binding energy for Pd 3d5/2 (335.3 eV), an evidence of Pd-Ce chemical interaction. The Pd/Al XPS intensity ratios vs. the Pd average particle size, determined by TEM, show an excellent correlation for fresh and used catalyst. These results indicate that the diminution of the Pd/Al ratios was due to Pd sintering. Consequently, the small amounts of CeOx species do not cover the Pd particle, in agreement with the HRTEM results. The overall results stand for the promoter action mechanism of the CeOx for the reforming reaction with CO2.Fil: Gigola, Carlos Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Moreno, Mario Sergio Jesus. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Costilla, Ignacio Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Sanchez, Miguel Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaElsevier Science2007-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/70693Gigola, Carlos Eugenio; Moreno, Mario Sergio Jesus; Costilla, Ignacio Oscar; Sanchez, Miguel Dario; Characterization of Pd-CeOx interaction on α-Al2O3 support; Elsevier Science; Applied Surface Science; 254; 1 SPEC. ISS.; 10-2007; 325-3290169-4332CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apsusc.2007.07.062info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169433207009609#!info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:10:50Zoai:ri.conicet.gov.ar:11336/70693instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:10:50.452CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Characterization of Pd-CeOx interaction on α-Al2O3 support
title Characterization of Pd-CeOx interaction on α-Al2O3 support
spellingShingle Characterization of Pd-CeOx interaction on α-Al2O3 support
Gigola, Carlos Eugenio
Catalyst
Cerium
Methane Reforming Whit Carbon Dioxide
Palladium
title_short Characterization of Pd-CeOx interaction on α-Al2O3 support
title_full Characterization of Pd-CeOx interaction on α-Al2O3 support
title_fullStr Characterization of Pd-CeOx interaction on α-Al2O3 support
title_full_unstemmed Characterization of Pd-CeOx interaction on α-Al2O3 support
title_sort Characterization of Pd-CeOx interaction on α-Al2O3 support
dc.creator.none.fl_str_mv Gigola, Carlos Eugenio
Moreno, Mario Sergio Jesus
Costilla, Ignacio Oscar
Sanchez, Miguel Dario
author Gigola, Carlos Eugenio
author_facet Gigola, Carlos Eugenio
Moreno, Mario Sergio Jesus
Costilla, Ignacio Oscar
Sanchez, Miguel Dario
author_role author
author2 Moreno, Mario Sergio Jesus
Costilla, Ignacio Oscar
Sanchez, Miguel Dario
author2_role author
author
author
dc.subject.none.fl_str_mv Catalyst
Cerium
Methane Reforming Whit Carbon Dioxide
Palladium
topic Catalyst
Cerium
Methane Reforming Whit Carbon Dioxide
Palladium
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The Pd-Ce interaction was studied over CeO2 (0.3-2.5 wt.%)-Pd (1 wt.%)/α-Al2O3 catalysts used in the reforming reaction of CH4 with CO2. The samples were characterized by using high resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). The activity and selectivity behavior was in good agreement with that of other supported metal catalysts (Ni and Pd) modified with different promoters. The preliminary results of HRTEM would indicate that the CeOx forms small crystallites around the Pd particle. The XPS analysis for the regions of Ce 3d and Pd 3d, gives an account of Ce being present mostly as Ce3+ and a high binding energy for Pd 3d5/2 (335.3 eV), an evidence of Pd-Ce chemical interaction. The Pd/Al XPS intensity ratios vs. the Pd average particle size, determined by TEM, show an excellent correlation for fresh and used catalyst. These results indicate that the diminution of the Pd/Al ratios was due to Pd sintering. Consequently, the small amounts of CeOx species do not cover the Pd particle, in agreement with the HRTEM results. The overall results stand for the promoter action mechanism of the CeOx for the reforming reaction with CO2.
Fil: Gigola, Carlos Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Moreno, Mario Sergio Jesus. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Costilla, Ignacio Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Sanchez, Miguel Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
description The Pd-Ce interaction was studied over CeO2 (0.3-2.5 wt.%)-Pd (1 wt.%)/α-Al2O3 catalysts used in the reforming reaction of CH4 with CO2. The samples were characterized by using high resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). The activity and selectivity behavior was in good agreement with that of other supported metal catalysts (Ni and Pd) modified with different promoters. The preliminary results of HRTEM would indicate that the CeOx forms small crystallites around the Pd particle. The XPS analysis for the regions of Ce 3d and Pd 3d, gives an account of Ce being present mostly as Ce3+ and a high binding energy for Pd 3d5/2 (335.3 eV), an evidence of Pd-Ce chemical interaction. The Pd/Al XPS intensity ratios vs. the Pd average particle size, determined by TEM, show an excellent correlation for fresh and used catalyst. These results indicate that the diminution of the Pd/Al ratios was due to Pd sintering. Consequently, the small amounts of CeOx species do not cover the Pd particle, in agreement with the HRTEM results. The overall results stand for the promoter action mechanism of the CeOx for the reforming reaction with CO2.
publishDate 2007
dc.date.none.fl_str_mv 2007-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/70693
Gigola, Carlos Eugenio; Moreno, Mario Sergio Jesus; Costilla, Ignacio Oscar; Sanchez, Miguel Dario; Characterization of Pd-CeOx interaction on α-Al2O3 support; Elsevier Science; Applied Surface Science; 254; 1 SPEC. ISS.; 10-2007; 325-329
0169-4332
CONICET Digital
CONICET
url http://hdl.handle.net/11336/70693
identifier_str_mv Gigola, Carlos Eugenio; Moreno, Mario Sergio Jesus; Costilla, Ignacio Oscar; Sanchez, Miguel Dario; Characterization of Pd-CeOx interaction on α-Al2O3 support; Elsevier Science; Applied Surface Science; 254; 1 SPEC. ISS.; 10-2007; 325-329
0169-4332
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apsusc.2007.07.062
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169433207009609#!
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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