FIELD: process engineering.
SUBSTANCE: invention relates to woodworking. Nano-sized cobalt powder (version 1st) is produced by reducing cobalt on adding triethylaluminum as a reducing agent to toluene solution of cobalt (II) acetyl acetonate in atmosphere of argon at molar cobalt (II) acetylacetonate-to-triethylaluminum ratio of 1:3-1:8. Produced mix is held for one hour at 20-30°C, concentrated to add pentane, hexane, heptane or octane to form ultrafine precipitate. Solution is decanted above the precipitate, said precipitate is flushed and dried at 20-30°C. In compliance with second version, cobalt (III) acetyl acetonate is used.
EFFECT: nano-sized cobalt powder with grain size of 2-5 nm and mixes thereof of 20-40 nm sixe, metal content making 52-62%.
2 cl, 1 dwg, 14 ex
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