English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/98808
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 9 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

CO-induced morphology changes in Zn-modified ceria: A FTIR spectroscopic study

Autor Penkova, Anna.; Laguna, Óscar H. ; Centeno, Miguel Ángel ; Odriozola, José Antonio
Fecha de publicación 2012
EditorAmerican Chemical Society
Citación Journal of Physical Chemistry C 116: 5747- 5756 (2012)
ResumenA FTIR study of the CO adsorption on a Zn-modified ceria is presented. The results indicate that at lower activation temperatures only Ce 4+ carbonyls were detected, which were reduced with the increase of the activation temperature. At higher activation temperatures, up to three Zn 2+ carbonyls were also identified according to the arrangement of the Zn 2+ cations. The consecutive CO adsorptions demonstrated an irreversible modification of the surface, resulting in an agglomeration of the zinc cations. A stepwise conversion of the isolated Zn 2+ carbonyls into carbonyls of the closely situated zinc cations followed by formation of bigger zinc oxide clusters was observed. The carbon monoxide coordinated on the isolated Zn 2+ cations at the interface with ceria reacts with the lattice oxygen leading to formation of oxygen vacancies. An insight into the origin of the activation during the CO oxidation process is proposed. © 2012 American Chemical Society.
URI http://hdl.handle.net/10261/98808
DOI10.1021/jp210996b
Identificadoresdoi: 10.1021/jp210996b
issn: 1932-7447
Aparece en las colecciones: (ICMS) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.