Abstract:
CePr mixed oxides were previously studied as supports for Water Gas Shift catalysts, considering their promising textural and redox properties arising from the presence of a non-stoichiometric oxide. A very small Ce3+ fraction was observed on those oxides, suggesting that Pr3+ion could be responsible for the enhanced activity. Therefore, in-depth XPS analysis is conducted in the present work in order to determine the Pr3+ fraction by fitting the XPS Pr 3d region. Much higher values of reduced Pr ions than Ce ions were observed, confirming the promoter role of the former. © 2017 Elsevier B.V.
Registro:
Documento: |
Artículo
|
Título: | Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis |
Autor: | Poggio-Fraccari, E.; Baronetti, G.; Mariño, F. |
Filiación: | ITHES, UBA-CONICET, Pabellón de Industrias, Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, 1428, Argentina
|
Palabras clave: | Oxidation state; Pr; XPS; Binary alloys; Cerium alloys; D region; Ions; Praseodymium; Water gas shift; X ray photoelectron spectroscopy; Mixed oxide; Non-stoichiometric; Oxidation state; Pr ions; Redox property; Surface fraction; Water gas shift catalysts; XPS analysis; Praseodymium alloys |
Año: | 2018
|
Volumen: | 222
|
Página de inicio: | 1
|
Página de fin: | 4
|
DOI: |
http://dx.doi.org/10.1016/j.elspec.2017.11.003 |
Título revista: | Journal of Electron Spectroscopy and Related Phenomena
|
Título revista abreviado: | J Electron Spectrosc Relat Phenom
|
ISSN: | 03682048
|
CODEN: | JESRA
|
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03682048_v222_n_p1_PoggioFraccari |
Referencias:
- Poggio-Fraccari, E., Mariño, F., Laborde, M., Baronetti, G., Copper and nickel catalysts supported on praseodymium-doped ceria (PDC) for the water-gas shift reaction (2013) Appl. Catal A: Gen., 460, pp. 15-20
- Poggio-Fraccari, E., Irigoyen, B., Baronetti, G., Mariño, F., Ce-Pr mixed oxides as active supports for water-gas shift reaction: experimental and density functional theory characterization (2014) Appl. Catal. A: Gen., 485, pp. 123-132
- Burroughs, P., Hamnett, A., Orchad, A., Thornton, G., Satellite structure in the X-ray photoelectron spectra of some binary and mixed oxides of lanthanum and nerium (1976) J Chem. Soc. Dalton Trans., 17, pp. 1686-1698
- Sarma, D., Rao, C., XPES studies of oxides of second-and third row transition metals including rare earths (1980) J. Electron Spec. Rel. Phenom., 20, pp. 25-45
- Bianconi, A., Miyahara, T., Kotani, A., Kitajima, Y., Yokoyama, T., Kuroda, H., Kuroda, H., Ohta, T., Correlation satellites in deep metal 3p core x-ray photoemission of tetravalent oxides MO2 (M=Ce,Pr,Tb,Hf) and of LaF3 (1989) Phys. Rev. B, 39, pp. 3380-3385
- Bianconi, A., Kotani, A., Okada, K., Giorgi, R., Gargano, A., Marcelli, A., Miyahara, T., Many-body effects in praseodiymium core-level spectroscopies of PrO2 (1988) Phys. Rev. B, 38, pp. 3433-3437
- Ogasawara, H., Kotani, A., Potze, R., Sawatzky, R., Thole, B., Praseodymium 3d- and 4d- core photoemission spectra of Pr2O3 (1991) Phys, Rev. B, 44, pp. 5465-5469
- Kotani, A., Jo, T., Parlebas, J., Many-body effects in core-level spectroscopy of rare-earth compounds (1987) Adv. Phys., 37, pp. 37-85
- Romeo, M., Bak, K., El Fallah, J., Le Normand, F., Hilaire, L., XPS study of the reduction of cerium dioxide (1993) Surf. and Int. Sci., 20, pp. 508-512
- Pajaczkowska, A., Novoselov, A., Klimm, D., Talik, E., Uecker, R., Does valency of Pr ions influence color of SrPrGaO4 single crystals? (2004) Cryst. Growth Des., 2, pp. 497-501
- Lutkehoff, S., Neumann, M., Slebarski, A., 3d and 4d x-ray-photoelectronspectra of Pr under gradual oxidation (1995) Phys. Rev. B, 52, pp. 13808-13811
- Shyu, J., Weber, W., Gandhi, H., Surface characterization of alumina-supported ceria (1988) J. Phys. Chem., 92, pp. 4964-4970
- Aragón, F., Gonzalez, I., Coaquira, J., Hidalgo, P., Brito, F., Ardisson, J., Macedo, W., Morais, P., Structural and surface study of praseodymium-doped SnO2 nanoparticles prepared by the polymeric precursor method (2015) J. Phys. Chem. C, 119, pp. 8711-8717
- Sinev, M., Graham, G., Haack, L., Shelef, M., Kinetic and structural studies of oxygen availabilityof the mixed oxides Pr1-xMxOy (M = Ce, Zr) (1996) J. Mater. Res., 11, pp. 1960-1971
- Borchert, H., Frolova, Y., Kaichev, V., Proskin, I., Sadykov, A., Electronic and chemical properties of nanostructured cerium dioxide doped with praseodymium (2005) J. Phys. Chem. B, 109, pp. 5728-5738
- Poggio, E., Jobbágy, M., Moreno, M., Laborde, M., Mariño, F., Baronetti, G., Influence of the calcination temperature on the structure and reducibility of nanoceria obtained from crystalline Ce(OH)CO3 precursor (2001) Int. J. Hydrogen Energ., 36, pp. 15899-15905
- Schefer, A., Gevers, S., Zielasek, V., Schroeder, T., Falta, J., Wollschläger, J., Bäumer, M., Photoemission study of praseodymia in its highest oxidation state: the necessity of in situ plasma treatment (2011) J. Phys. Chem., 134, pp. 54701-54708
- Dai, H., Ng, C., Au, C., SrCl2-promoted REOx (RE = Ce, Pr, Tb) catalysts for the selective oxidation of ethane: a study on performance and defect structures for ethene formation (2001) J. Catal., 199, pp. 177-192
- Mekki, A., Ziq, K., Holland, D., McConville, C., Magnetic properties of praseodymium ions inNa2O–Pr2O3–SiO2 glasses (2003) J. Magn. Magn. Mater., 260, pp. 60-69
- He, H., Dai, H., Wong, K., C: Au, RE0. 6Zr0. 4-xYxO2 (RE = Ce, Pr; x = 0, 0. 05) solid solutions: an investigation on defective structure, oxygen mobility, oxygen storage capacity, and redox properties (2003) Appl. Catal A: Gen., 251, pp. 61-74
- Kitamura, A., Noguchi, Y., Miyayama, M., Polarization properties of praseodymium-modified SrBi2Ta2O9 ceramics and thin films prepared by sol-gel method (2004) Mat. Lett., 58, pp. 1815-1818
- Song, Z., Liu, W., Nishiguchi, H., Takami, A., Nagaoka, K., Takita, Y., The Pr promotion effect on oxygen storage capacity of Ce-Pr oxides studied using a TAP reactor (2007) Appl. Catal. A: Gen., 329, pp. 86-92
- Zhang, Y., Han, K., Yin, X., Fang, Z., Xu, Z., Zhu, W., Synthesis and characterization of single-crystalline PrCO3OH dodecahedral microrods and its thermal conversion to Pr6O11 (2009) J. Crys. Growth, 311, pp. 3383-3888
- Narula, C., Haack, L., Chun, W., Jen, W., Graham, W., Single-phase PrOy-ZrO2 materials and their oxygen storage capacity: a comparison with single-phase CeO2-ZrO2, PrOy-CeO2, and PrOy-CeO2-ZrO2 materials (1999) J. Phys. Chem. B, 103, pp. 3634-3639
Citas:
---------- APA ----------
Poggio-Fraccari, E., Baronetti, G. & Mariño, F.
(2018)
. Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis. Journal of Electron Spectroscopy and Related Phenomena, 222, 1-4.
http://dx.doi.org/10.1016/j.elspec.2017.11.003---------- CHICAGO ----------
Poggio-Fraccari, E., Baronetti, G., Mariño, F.
"Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis"
. Journal of Electron Spectroscopy and Related Phenomena 222
(2018) : 1-4.
http://dx.doi.org/10.1016/j.elspec.2017.11.003---------- MLA ----------
Poggio-Fraccari, E., Baronetti, G., Mariño, F.
"Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis"
. Journal of Electron Spectroscopy and Related Phenomena, vol. 222, 2018, pp. 1-4.
http://dx.doi.org/10.1016/j.elspec.2017.11.003---------- VANCOUVER ----------
Poggio-Fraccari, E., Baronetti, G., Mariño, F. Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis. J Electron Spectrosc Relat Phenom. 2018;222:1-4.
http://dx.doi.org/10.1016/j.elspec.2017.11.003