Artículo
On the Co solubility in Ce0.9Zr0.1O2 nanoparticles studied by EXAFS
Tavoliere, Maximiliano Daniel; Zimicz, Maria Genoveva
; Vega Castillo, Jesus Eduardo
; Soldati, Analía Leticia
; Prado, Fernando Daniel
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
08/2022
Editorial:
Academic Press Inc Elsevier Science
Revista:
Journal of Solid State Chemistry
ISSN:
0022-4596
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The Co solubility in the (Ce0.9Zr0.1)1-xCoxO2-δ system have been studied varying the Co content, 0 ≤ x ≤ 0.15, and the heat treatment temperature, 600 ≤ T ≤ 1000 °C, on samples prepared by the citrate method, by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray absorption spectroscopy (XAS). XRD data shows no significant variation in the lattice parameter of the fluorite crystal structure and reveals the presence of Co3O4 oxide as secondary phase in most samples with the exception of those with x = 0.03 and 0.05 annealed at 600 °C. The analysis of the extended X-ray absorption fine structure (EXAFS) zone of the K-edge of Co of these two samples clearly indicates Co oxide is in amorphous state. These results indicate the incorporation of Co in Ce0.9Zr0.1O2-δ at T ≥ 600 °C is negligible. This is an important result, mainly for catalytic applications, where the characterization of the active centre is a key factor for understanding the performance of the catalyst.
Palabras clave:
CE0.9ZR0.1O2
,
COBALT SOLUBILITY
,
EXAFS
,
FLUORITE
,
XAS
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos (UE-INN - NODO BARILOCHE)
Articulos de UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA - NODO BARILOCHE
Articulos de UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA - NODO BARILOCHE
Articulos(IFISUR)
Articulos de INSTITUTO DE FISICA DEL SUR
Articulos de INSTITUTO DE FISICA DEL SUR
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Tavoliere, Maximiliano Daniel; Zimicz, Maria Genoveva; Vega Castillo, Jesus Eduardo; Soldati, Analía Leticia; Prado, Fernando Daniel; On the Co solubility in Ce0.9Zr0.1O2 nanoparticles studied by EXAFS; Academic Press Inc Elsevier Science; Journal of Solid State Chemistry; 312; 8-2022; 1-10
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