Solvent free synthesis of nanocrystalline hexaaluminate-type mixed oxides with high specific surface areas for CO oxidation reaction

Nanocrystalline hexaaluminate-type mixed oxides having crystallite sizes of around 20 nm and high surface areas (>77 m2 g−1) were synthesized using an original mechanosynthesis technique. These nanocrystalline materials were evidenced to be highly active heterogeneous catalysts compared to the conventional parent materials.