ABSTRACT
High surface area tetragonal zirconia (~100 m2/g) and Y-doped zirconium oxide with stoichiometry Zr0.9Y0.1O1.95 (~150 m2/g) were prepared as nanocrystallites (5-7 nm) and loaded with 2%Pt precious metal. Catalysts were also prepared with 2.5% Na-doping, in addition to Pt. Scanning transmission electron microscopy images revealed that the diameters of the Pt crystallites ranged from 1 to 2.5 nm over the catalysts and that the Na-doped catalysts were more dispersed in that they tended to be less agglomerated than the undoped catalysts.
