FIELD: metallurgy.
SUBSTANCE: mesoporous SiO2 is used as a porous medium to be impregnated with the reaction solution containing the metal nitrides and water-soluble organic compounds, for example, glycine. Synthesis temperature is controlled by application of ammonium nitrate. After every step of impregnation, air- of vacuum-drying is performed. Then, impregnated SiO2 is compacted to get the compacted blank and to initiate the chemical reaction therein with the help of tungsten coiled filament. Now, said blank is cooled down and ground to required fineness and leached in concentrated solution of sodium hydroxide at 80°C for 12 hours. Obtained oxide consisting of superfine particles sized to about 3 nm is extracted by filtering and washing.
EFFECT: nanoparticles with narrow size distribution and high specific surface.
4 cl 2 dwg, 3 ex
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