Artículo

Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis

Poggio Fraccari, Eduardo ArístidesIcon ; Baronetti, Graciela TeresitaIcon ; Mariño, Fernando JavierIcon
Fecha de publicación: 01/2018
Editorial: Elsevier Science
Revista: Journal Of Electron Spectroscopy And Related Phenomena
ISSN: 0368-2048
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

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.
Palabras clave: Oxidation State , Pr , Xps
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/60259
DOI: http://dx.doi.org/10.1016/j.elspec.2017.11.003
URL: https://www.sciencedirect.com/science/article/pii/S0368204817302037
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Articulos(ITHES)
Articulos de INST. DE TECNOLOGIAS DEL HIDROGENO Y ENERGIAS SOSTENIBLES
Citación
Poggio Fraccari, Eduardo Arístides; Baronetti, Graciela Teresita; Mariño, Fernando Javier; Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis; Elsevier Science; Journal Of Electron Spectroscopy And Related Phenomena; 222; 1-2018; 1-4
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