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Higher activity of diesel soot oxidation over polycrystalline ceria and ceria-zirconia solid solutions from more reactive surface planes

Autor
Aneggi, E.; de Leitenburg, C.; Llorca, J.; Trovarelli, A.
Tipus d'activitat
Article en revista
Revista
Catalysis today
Data de publicació
2012-12-15
Volum
197
Número
1
Pàgina inicial
119
Pàgina final
126
DOI
https://doi.org/10.1016/j.cattod.2012.07.030 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/19665 Obrir en finestra nova
Resum
High temperature treatment under air of samples of polycrystalline ceria and ceria–zirconia is shown to induce a rearrangement of crystals, with a surface structural evolution of the oxides toward the formation of more reactive exposed planes belonging to the {1 0 0} and {1 1 0} families, associated with a decrease of the exposure of the less reactive {1 1 1} facets. This is dependent on the amount of ceria, being more evident with pure CeO2, and less important with increasing ZrO2 content. A ...
Citació
Aneggi, E. [et al.]. Higher activity of diesel soot oxidation over polycrystalline ceria and ceria-zirconia solid solutions from more reactive surface planes. "Catalysis today", 15 Desembre 2012, vol. 197, núm. 1, p. 119-126.
Paraules clau
CeO 2, CeO 2-ZrO 2, Ceria, Ceria-zirconia, Diesel, Exposed surfaces, Nanoshaped ceria, Redox, Soot oxidation, Surface structure sensitivity
Grup de recerca
CRnE - Centre de Recerca en Ciència i Enginyeria Multiescala de Barcelona
NEMEN - Nanoenginyeria de materials aplicats a l'energia

Participants

  • Aneggi, Eleonora  (autor)
  • de Leitenburg, Carla  (autor)
  • Llorca Pique, Jordi  (autor)
  • Trovarelli, Alessandro  (autor)