Low Temperature Toluene Oxidation Over Pt Nanoparticles Supported on Yttria Stabilized-Zirconia

H. A. E. Dole (1) , R. J. Isaifan (2) , F. Sapountzi (1) , L. Lizarraga (1) , D. Aubert (3) , A. Princivalle (3) , P. Vernoux (4) , E. A. Baranova (2)

1 AIR - AIR
2 University of Ottawa [Ottawa]
3 LSFC - Laboratoire de Synthèse et Fonctionnalisation des Céramiques
4 IRCELYON - Institut de recherches sur la catalyse et l'environnement de Lyon

Toluene oxidation was measured over Pt nanoparticles synthesized using a modified polyol reduction method and deposited on ionically conductive yttria-stabilized zirconia (Pt/YSZ) for three different loadings (1.1, 0.8, 0.4 %), and non-ionically conductive gamma-alumina (Pt/gamma-Al2O3) as a comparison (metal loading 0.7 %). It was found that nanoparticles supported on YSZ, tested as a support for the first time for toluene oxidation, have greater catalytic activity compared to a conventional gamma-Al2O3 support in spite of a lower specific area and Pt dispersion. This could be explained by the stronger metal-support interactions between Pt and YSZ due to the ionic conductivity of YSZ and presence of oxygen vacancies.

Mots clés: Author Keywords:Toluene oxidation; Ionic conductivity; Yttria-stabilized zirconia; Oxygen vacancies; Platinum VOLATILE ORGANIC-COMPOUNDS; ELECTROCHEMICAL PROMOTION; CATALYTIC-OXIDATION; CONDUCTING CERAMICS; PT/AL2O3 CATALYSTS; COMBUSTION; SIZE; PT/YSZ; YSZ; CO

Domaines: Matériaux

H. A. E. Dole, R. J. Isaifan, F. Sapountzi, L. Lizarraga, D. Aubert, et al.. Low Temperature Toluene Oxidation Over Pt Nanoparticles Supported on Yttria Stabilized-Zirconia. Catalysis Letters, 2013, 143 (10), pp.996-1002. ⟨hal-00933216⟩