The influence of metal loading and pH during preparation on the CO oxidation activity of Au/TiO2 catalysts

Abstract

Au/TiO₂ catalysts with gold loadings in the range 0.06–1.9 wt.%, prepared by ‘deposition–precipitation’ at pH 9, have a constant and high specific activity for the oxidation of CO: 3.9( ± 0.4) × 10⁻⁴ mol_CO s⁻¹ g_Au ⁻¹ at 243 K.