METHOD FOR SYNTHESIS OF HOLLOW NANOPARTICLES OF γ-AlO Russian patent published in 2014 - IPC B22F9/14 B82B3/00 

FIELD: chemistry.

SUBSTANCE: method for synthesis of hollow nanoparticles of γ-Al₂O₃ is carried out in two steps, the first step including plasma-arc synthesis of an aluminium-carbon material, which includes evacuating a vacuum chamber, filling said chamber with an inert gas, igniting direct-current arc between a graphite electrode and a metal-carbon composite electrode and spraying the composite electrode, which is in the form of a graphite rod with a cavity in which aluminium wire is inserted with weight ratio C:Al of 15:1, and the second step including annealing the synthesized material in an oxygen-containing medium at atmospheric pressure and temperature of 400-950°C for one hour.

EFFECT: obtaining nanodispersed aluminium oxide power, the particles of which are hollow spheres with diameter of 6-14 nm, which is suitable for use in catalytic applications and material science.

2 cl, 5 dwg