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dc.contributor.author
Tarditi, Ana Maria
dc.contributor.author
Barroso, Mariana Noelia
dc.contributor.author
Galetti, Agustin Esteban
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Arrua, Luis Alberto
dc.contributor.author
Cornaglia, Laura Maria
dc.contributor.author
Abello, Maria Cristina
dc.date.available
2016-05-26T18:41:46Z
dc.date.issued
2014-04
dc.identifier.citation
Tarditi, Ana Maria; Barroso, Mariana Noelia; Galetti, Agustin Esteban; Arrua, Luis Alberto; Cornaglia, Laura Maria; et al.; XPS study of the surface properties and Ni particle size determination of Ni supported catalysts; Wiley; Surface Interface Analysis; 46; 8; 4-2014; 521-529
dc.identifier.issn
1096-9918
dc.identifier.uri
http://hdl.handle.net/11336/5849
dc.description.abstract
The surface properties of Ni/MgAl2O4 catalysts doped with Ce or Pr were analyzed by XPS after treatment in an inert and reductive atmosphere at 400 °C. The Ce-promoted solids presented the Ce3+/Ce4+ couple on the surface even after treatment in a reductive atmosphere, H2(5%)/Ar. The promotion effect of Ce on these solids could be associated with their participation on the carbon deposition-removal mechanism. Pr-doped catalysts showed a very high concentration of Pr3+ under a reductive atmosphere and the redox behavior associated with the carbon removal could be partially inhibited or become slower. The size of the Ni0 particles after both an inert and a reductive atmosphere was estimated by XPS intensity ratio using the model proposed by Davis. The results obtained from the Davis model showed that an important increase occurred in Ni particle size after treatment in H2(5%)/Ar for the Pr-promoted solids . The metal sintering under reductive atmosphere could be the reason for the higher loss of activity of the Pr-doped solids under reforming conditions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Ni/Mgal2o4
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Catalyst
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Ce or Pr
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Xps
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Davis Model
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Física de los Fluidos y Plasma
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
XPS study of the surface properties and Ni particle size determination of Ni supported catalysts
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-05-16T20:08:29Z
dc.journal.volume
46
dc.journal.number
8
dc.journal.pagination
521-529
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Hoboken
dc.description.fil
Fil: Tarditi, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica; Argentina
dc.description.fil
Fil: Barroso, Mariana Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones En Tecnología Química; Argentina
dc.description.fil
Fil: Galetti, Agustin Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones En Tecnología Química; Argentina
dc.description.fil
Fil: Arrua, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones En Tecnología Química; Argentina
dc.description.fil
Fil: Cornaglia, Laura Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica; Argentina
dc.description.fil
Fil: Abello, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones en Tecnología Química; Argentina
dc.journal.title
Surface Interface Analysis
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/sia.5549/abstract
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/sia.5549
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1002/sia.5549
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