METHOD OF SYNTHESIS OF NANOSTRUCTURAL COMPOSITE CeO-PdO MATERIAL Russian patent published in 2014 - IPC B82B3/00 B01J37/34 C01F17/00 B01J23/63 B01J23/44 

FIELD: nanotechnology.

SUBSTANCE: invention relates to the field of nanotechnologies, namely to flame-arc technology of synthesis of nanostructural composite materials. The proposed method of synthesis of nanostructural composite CeO₂-PdO material in plasma of electric discharge comprises evacuation of vacuum chamber, filling it with inert gas, ignition of the electric direct-current arc between the graphite electrode and the metal-carbon composite electrode which is a graphite rod with the cavity perforated in the centre, and spraying the composite electrode. At that in the plasma of electric arc discharge the metal-carbon composite electrode is sprayed, in which cavity drilled in the centre the rod of cerium is mounted, which is wrapped in palladium foil, and the weight ratio Pd/Ce is from 3 to 9%. Then, annealing of the synthesised material is performed, which comprises Ce₂O₃nanocrystals and a small amount of Pd nanocrystals with characteristic sizes of 2-5 nm, by heating it in the oxygen-containing environment with the atmospheric pressure to the temperature of 600, 700, 800, 900°C, with exposure for 2 hours and slow cooling.

EFFECT: method enables to obtain nanostructural composite material CeO₂-PdO which can be used as a catalyst having high activity at low temperatures as well as improved thermal stability and resistance to corrosion in aggressive environments.

2 cl, 6 dwg