Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | Vecchietti, María Julia | - |
| dc.creator | Collins, Sebastián Enrique | - |
| dc.creator | Xu, Wenqian | - |
| dc.creator | Barrio, Laura | - |
| dc.creator | Stacchiola, Dario | - |
| dc.creator | Calatayud, Mónica | - |
| dc.creator | Tielens, Frederik | - |
| dc.creator | Delgado, Juan José | - |
| dc.creator | Bonivardi, Adrian Lionel | - |
| dc.date | 2016-12-05T14:15:52Z | - |
| dc.date | 2016-12-05T14:15:52Z | - |
| dc.date | 2013-04 | - |
| dc.date | 2016-12-02T16:01:24Z | - |
| dc.date.accessioned | 2019-04-29T15:39:39Z | - |
| dc.date.available | 2019-04-29T15:39:39Z | - |
| dc.date.issued | 2013-04 | - |
| dc.identifier | Vecchietti, María Julia; Collins, Sebastián Enrique; Xu, Wenqian; Barrio, Laura; Stacchiola, Dario; et al.; Surface Reduction Mechanism of Cerium-Gallium Mixed Oxides with Enhanced Redox Properties; American Chemical Society; Journal Of Physical Chemistry C; 117; 17; 4-2013; 8822-8831 | - |
| dc.identifier | 1932-7447 | - |
| dc.identifier | http://hdl.handle.net/11336/8756 | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/298829 | - |
| dc.description | The doping of CeO2 with different types of cations has been recognized as a significant factor in controlling the oxygen vacancies and improving the oxygen mobility. Thus, the catalytic properties of these materials might be determined by modifying the redox properties of ceria. A combined experimental and theoretical study of the redox properties of gallium-doped cerium dioxide is presented. Infrared spectroscopy and timeresolved X-ray diffraction were used for temperature programmed reduction (H2) and oxidation (with O2 and H2O) studies. Additionally, X-ray absorption near edge spectroscopy shows that only Ce4+ is reduced to Ce3+ in the ceria-gallia mixed oxides when annealed up to 623 K. The oxygen storage capacity (OSC) measurements show a pronounced enhancement on the reduction of ceria by gallium doping. Theoretical calculations by density functional theory (DFT) confirm the higher reducibility of gallium-doped ceria oxides and give a molecular description of the stabilization of the doped material. On the basis of infrared spectroscopic measurements, a novel mechanism is proposed for the surface reduction of Ce4+ to Ce3+ where Ga−H species are suggested to be directly involved in the process. In addition, the reoxidation by H2O was precluded in the galliumdoped ceria oxide. | - |
| dc.description | Fil: Vecchietti, María Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina | - |
| dc.description | Fil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina | - |
| dc.description | Fil: Xu, Wenqian. Brookhaven National Laboratory; Estados Unidos | - |
| dc.description | Fil: Barrio, Laura. Brookhaven National Laboratory; Estados Unidos | - |
| dc.description | Fil: Stacchiola, Dario. Brookhaven National Laboratory; Estados Unidos | - |
| dc.description | Fil: Calatayud, Mónica. Universite Pierre Et Marie Curie; Francia | - |
| dc.description | Fil: Tielens, Frederik. Universite Pierre Et Marie Curie; Francia | - |
| dc.description | Fil: Delgado, Juan José. Universidad de Cadiz. Facultad de Ciencias. Departamento de Cs.de Los Materiales E Ing.metalurgica y Quim.inorg.; España | - |
| dc.description | Fil: Bonivardi, Adrian Lionel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | American Chemical Society | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/jp400285b | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp400285b | - |
| dc.rights | info:eu-repo/semantics/restrictedAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.subject | Ga2O3 | - |
| dc.subject | infrared spectroscopy | - |
| dc.subject | XAFS | - |
| dc.subject | water gas shift reaction | - |
| dc.subject | DFT | - |
| dc.subject | H2 | - |
| dc.subject | Físico-Química, Ciencia de los Polímeros, Electroquímica | - |
| dc.subject | Ciencias Químicas | - |
| dc.subject | CIENCIAS NATURALES Y EXACTAS | - |
| dc.title | Surface Reduction Mechanism of Cerium-Gallium Mixed Oxides with Enhanced Redox Properties | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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