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

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

1 AIR - AIR
2 EAU:BIOVERT+GAU

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.

Domaines: Catalyse; Environnement et Société

H. A. E. Dole, R. J. Isaifan, F. M. Sapountzi, L. Lizarraga, D. Aubert, et al.. Low Temperature Toluene Oxidation Over Pt Nanoparticles Supported on Yttria Stabilized-Zirconia. Catalysis Letters, 2013, 143, pp.996-1002. ⟨10.1007/s10562-013-1071-x⟩. ⟨hal-00912600⟩