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

H.A.E. DOLE; R.J. ISAFAN; F.M. SAPOUNTZI; L. LIZARRAGA; D. AUBERT; A. PRINCIVALLE; P. VERNOUX; E.A BARANOVA

CATALYSIS LETTERS

SPRINGER

Lugar: Berlin; Año: 2013 vol. 143 p. 996 - 1002

1011-372X

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 γ-alumina (Pt/γ-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 γ-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.