In situ transmission electron microscopy investigation of Ce(IV) and Pr(IV) reducibility in a Rh (1%)/Ce0.8Pr0.2O(2-x) catalyst

C López-Cartes; S Bernal; J J Calvino; M A Cauqui; G Blanco; J A Pérez-Omil; J M Pintado; S Helveg; P L Hansen

doi:10.1039/b211786j

In situ transmission electron microscopy investigation of Ce(IV) and Pr(IV) reducibility in a Rh (1%)/Ce0.8Pr0.2O(2-x) catalyst

Chem Commun (Camb). 2003 Mar 7:(5):644-5. doi: 10.1039/b211786j.

Authors

C López-Cartes¹, S Bernal, J J Calvino, M A Cauqui, G Blanco, J A Pérez-Omil, J M Pintado, S Helveg, P L Hansen

Affiliation

¹ Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Universidad de Cádiz, Apdo 40 Puerto Real, 11510-Cádiz, Spain.

PMID: 12669866
DOI: 10.1039/b211786j

Abstract

In-situ Atomic Resolution Transmission Electron Microscopy studies carried out on a Rh/Ce0.8Pr0.2O(2-x) catalyst, under hydrogen in the temperature range 298-1223 K, show the occurrence of consecutive reduction of Pr4+ and Ce4+ ions, and the formation of an oxygen-deficient Ln16O30 (Ln: Ce, Pr) ordered phase.