Thermal stability of Pd or Pt loaded Ce0.68Zr0.32O2 and Ce0.50Zr0.50O2 catalyst materials under oxidising conditions

Abstract : The sintering behaviour of Pd or Pt loaded ceria-zirconia solid solutions of nominal composition Ce0.50Zr0.50O2 and Ce0.68Zr0.32O2 was studied under oxidising conditions. Calcination treatments were carried out under controlled oxidising atmosphere for periods of up to 96 h. Powder X-ray diffraction and BET nitrogen adsorption-desorption derived surface area data are reported for the bare materials and for those loaded with low (<1% w/w) amounts of the noble metals, palladium and platinum. Phase demixing was observed as sintering progressed for both of the compositions studied with some differences in behaviour observed between the noble metal free and noble metal loaded catalysts. The results are discussed from a thermodynamic viewpoint, which allows to distinguish the behaviour of the two compositions during the demixing process.
Type de document :
Article dans une revue
Applied Catalysis B: Environmental, Elsevier, 2001, 29 (2), pp.93-101. 〈10.1016/S0926-3373(00)00196-X〉
Liste complète des métadonnées

https://hal-emse.ccsd.cnrs.fr/emse-00609100
Contributeur : Andrée-Aimée Toucas <>
Soumis le : lundi 18 juillet 2011 - 11:26:53
Dernière modification le : jeudi 11 janvier 2018 - 06:21:23

Lien texte intégral

Identifiants

Citation

Kester Kenevey, Françoise Valdivieso, Michel Soustelle, Michèle Pijolat. Thermal stability of Pd or Pt loaded Ce0.68Zr0.32O2 and Ce0.50Zr0.50O2 catalyst materials under oxidising conditions. Applied Catalysis B: Environmental, Elsevier, 2001, 29 (2), pp.93-101. 〈10.1016/S0926-3373(00)00196-X〉. 〈emse-00609100〉

Partager

Métriques

Consultations de la notice

56