Platinum nanoparticles on Al2O3: Correlation between the particle size and activity in total methane oxidation

Catalytic activity of size-controlled platinum nanoparticles supported on the acid-pretreated γ-alumina has been measured in complete methane oxidation under lean conditions. The strong size sensitivity was shown to originate from the size dependence of the apparent activation energy of the methane oxidation and/or oxidation state of platinum in the catalytically active nanoparticles.