Artículo
Zimicz, M.G.; Larrondo, S.A.; Prado, R.J.; Lamas, D.G. "Time-resolved in situ XANES study of the redox properties of Ce 0.9Zr 0.1O 2 mixed oxides" (2012) International Journal of Hydrogen Energy. 37(19):14881-14886
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Abstract:
The aim of this paper is to gain further insight in the reduction and reoxidation processes taking place when Ce 0.9Zr 0.1O 2 mixed oxides are in reducing or oxidizing atmospheres, respectively. The reduction process of these mixed oxides synthesized by two stoichiometric nitrate-aminoacid gel-combustion routes using glycine and lysine as fuels is studied by conventional H 2-Temperature Programmed Reduction experiments. The results are compared with those obtained by time-resolved in situ X-ray absorption near-edge spectroscopy (XANES) in the energy level corresponding to the Ce L III absorption edge. The reoxidation process by this last technique is also studied. Even though the identical composition and crystal structure of both samples, the redox processes resulted very different for each solid, suggesting the influence of specific surface area, pore volume and particle size on them. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Time-resolved in situ XANES study of the redox properties of Ce 0.9Zr 0.1O 2 mixed oxides |
| Autor: | Zimicz, M.G.; Larrondo, S.A.; Prado, R.J.; Lamas, D.G. |
| Filiación: | Centro de Investigaciones en Sólidos, CINSO-CONICET-CITEDEF, J.B. de La Salle 4397, (B1603ALO), Villa Martelli, Pcia, Buenos Aires, Argentina Laboratorio de Procesos Catalíticos, Depto. de Ing. Química, Ciudad Universitaria, (C1428EGA), Ciudad Autónoma de Buenos Aires, Argentina Instituto de Física, Universidade Federal de Mato Grosso, Av. Fernando Corrêa s/n, 78060-900, Cuiabá, MT, Brazil Laboratorio de Caracterización de Materiales, Facultad de Ingeniería, Universidad Nacional Del Comahue, Buenos Aires 1400, (8300) Neuquen Capital, Argentina CONICET, Argentina |
| Palabras clave: | Ce 0.9Zr 0.1O 2; Reduction-reoxidation; TPR; XANES; Absorption edges; Gel-combustion; In-situ; Mixed oxide; Oxidizing atmosphere; Pore volume; Re-oxidation; Redox process; Redox property; Reduction process; Reduction-reoxidation; Temperature-programmed reduction; Time-resolved; TPR; X-ray absorption near edge spectroscopy; XANES; Amino acids; Crystal structure; Zirconium |
| Año: | 2012 |
| Volumen: | 37 |
| Número: | 19 |
| Página de inicio: | 14881 |
| Página de fin: | 14886 |
| DOI: | http://dx.doi.org/10.1016/j.ijhydene.2012.01.162 |
| Título revista: | International Journal of Hydrogen Energy |
| Título revista abreviado: | Int J Hydrogen Energy |
| ISSN: | 03603199 |
| CODEN: | IJHED |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v37_n19_p14881_Zimicz |
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Citas:
---------- APA ----------
Zimicz, M.G., Larrondo, S.A., Prado, R.J. & Lamas, D.G. (2012) . Time-resolved in situ XANES study of the redox properties of Ce 0.9Zr 0.1O 2 mixed oxides. International Journal of Hydrogen Energy, 37(19), 14881-14886.http://dx.doi.org/10.1016/j.ijhydene.2012.01.162
---------- CHICAGO ----------
Zimicz, M.G., Larrondo, S.A., Prado, R.J., Lamas, D.G. "Time-resolved in situ XANES study of the redox properties of Ce 0.9Zr 0.1O 2 mixed oxides" . International Journal of Hydrogen Energy 37, no. 19 (2012) : 14881-14886.http://dx.doi.org/10.1016/j.ijhydene.2012.01.162
---------- MLA ----------
Zimicz, M.G., Larrondo, S.A., Prado, R.J., Lamas, D.G. "Time-resolved in situ XANES study of the redox properties of Ce 0.9Zr 0.1O 2 mixed oxides" . International Journal of Hydrogen Energy, vol. 37, no. 19, 2012, pp. 14881-14886.http://dx.doi.org/10.1016/j.ijhydene.2012.01.162
---------- VANCOUVER ----------
Zimicz, M.G., Larrondo, S.A., Prado, R.J., Lamas, D.G. Time-resolved in situ XANES study of the redox properties of Ce 0.9Zr 0.1O 2 mixed oxides. Int J Hydrogen Energy. 2012;37(19):14881-14886.http://dx.doi.org/10.1016/j.ijhydene.2012.01.162
