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dc.contributor.author
Toscani, Lucía María
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Craievich, Aldo F.
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Fantini, Márcia C. A.
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Lamas, Diego Germán
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Larrondo, Susana Adelina
dc.date.available
2018-03-13T19:18:56Z
dc.date.issued
2016-10
dc.identifier.citation
Toscani, Lucía María; Craievich, Aldo F.; Fantini, Márcia C. A.; Lamas, Diego Germán; Larrondo, Susana Adelina; Effects of the Incorporation of Sc2O3 into CeO2-ZrO2 Solid Solution: Structural Characterization and in Situ XANES/TPR Study under H2 Atmosphere; American Chemical Society; Journal of Physical Chemistry C; 120; 42; 10-2016; 24165-24175
dc.identifier.issn
1932-7447
dc.identifier.uri
http://hdl.handle.net/11336/38684
dc.description.abstract
Nanostructured CeO2-rich samples cosubstituted with ZrO2 and Sc2O3 are studied. The effects of the combined additions of both oxides on structural, morphological, and, especially, redox properties of the substituted lattice are assessed. In situ near edge X-ray absorption (XANES) experiments with synchrotron light were performed to study oxygen exchange capacity in a reducing environment for these ternary oxides. Structural characterization revealed that up to 8 at. % Sc was successfully incorporated into the CeO2-ZrO2 lattice without phase segregation. Increased scandia solubility was achieved through a soft chemical route synthesis involving citrate complexation which gave rise to porous powders with crystallite sizes in the nanometer range. In situ XANES experiments in 5 mol % H2/He atmosphere demonstrated that adding Sc3+ to the CeO2-ZrO2 mixed oxide leads to a ternary system (Ce0.9ScxZr0.1-xO2-δ) with faster reduction kinetics and enhanced reducibility in the whole temperature range analyzed (25-800 °C) compared to both binary materials: Ce0.9Zr0.1O2 and Ce0.9Sc0.1O1.95.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
It-Sofcs
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Anodes
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Xanes
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Física Atómica, Molecular y Química
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Effects of the Incorporation of Sc2O3 into CeO2-ZrO2 Solid Solution: Structural Characterization and in Situ XANES/TPR Study under H2 Atmosphere
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-12T18:33:43Z
dc.journal.volume
120
dc.journal.number
42
dc.journal.pagination
24165-24175
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Toscani, Lucía María. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Investigación y Desarrollo Estratégico para la Defensa. Ministerio de Defensa. Unidad de Investigación y Desarrollo Estratégico para la Defensa; Argentina
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Fil: Craievich, Aldo F.. Universidade de Sao Paulo; Brasil
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Fil: Fantini, Márcia C. A.. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Lamas, Diego Germán. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Larrondo, Susana Adelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Investigación y Desarrollo Estratégico para la Defensa. Ministerio de Defensa. Unidad de Investigación y Desarrollo Estratégico para la Defensa; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina
dc.journal.title
Journal of Physical Chemistry C
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acs.jpcc.6b07847
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jpcc.6b07847
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