FIELD: chemistry.
SUBSTANCE: method involves treatment of an initial inorganic salt of the corresponding metal in a reaction gas medium at high temperature. The initial salt used is powdered salt of a metal selected from: aluminium, cobalt, calcium, copper, magnesium and iron, which is treated in a water vapour stream fed at 20-30 ml/min and temperature of 500-900°C.
EFFECT: method is technologically simple and convenient.
4 ex, 4 dwg
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