Surface-dependent oxidation of H2 on CeO2 surfaces (Articolo in rivista)

Type
Label
  • Surface-dependent oxidation of H2 on CeO2 surfaces (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jcat.2012.10.011 (literal)
Alternative label
  • T. Désaunay a, G. Bonura b, V. Chiodo b, S. Freni b, J.-P. Couzinié c, J. Bourgon c, A. Ringuedé a, F. Labat a, C. Adamo a, M. Cassir a, (2013)
    Surface-dependent oxidation of H2 on CeO2 surfaces
    in Journal of catalysis (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • T. Désaunay a, G. Bonura b, V. Chiodo b, S. Freni b, J.-P. Couzinié c, J. Bourgon c, A. Ringuedé a, F. Labat a, C. Adamo a, M. Cassir a, (literal)
Pagina inizio
  • 193 (literal)
Pagina fine
  • 201 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 297 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Laboratoire d'Électrochimie, Chimie des Interfaces et Modélisation pour l'Énergie, UMR CNRS 7575, Ecole Nationale Supérieure de Chimie de Paris - Chimie-ParisTech, Paris, France b CNR ITAE Nicola Giordano, Messina c ICMPE CNRS-UPEC UMR7182, MCMC, Thiais, France (literal)
Titolo
  • Surface-dependent oxidation of H2 on CeO2 surfaces (literal)
Abstract
  • In this study, ceria nanoparticles with well-defined surface states were synthesized in order to enable the study of different ceria surfaces, independently. Ceria nanocubes were shown to expose only (1 0 0) surfaces, ceria nanooctahedra only (1 1 1) surfaces, and ceria nanorods are more complex, with at least 50% of (1 1 0) surfaces, as shown by high-resolution transmission electron microscopy. Temperature-programmed reduction (TPR) by hydrogen performed on these powders shows the following order of reaction temperatures: cubes < rods < octahe dra. Moreover, activation energies associated with the first surface reduction in each sample show a similar trend. Ceria (1 0 0) surface is the most reactive toward hydrogen oxidation, while (1 1 1) surface is the less reactive, and (1 1 0) surface has likely an intermediate behavior. These results confirm that hydrogen oxidation is highly surface-d. (literal)
Prodotto di
Autore CNR

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it