METHOD OF PRODUCING FeNi/C NANOCOMPOSITE ON INDUSTRIAL SCALE Russian patent published in 2016 - IPC B82B3/00 C08F20/44 H01F1/42 

FIELD: nanotechnology.

SUBSTANCE: invention relates to nanotechnology of FeNi₃/C nanocomposite producing. Method for FeNi₃/C nanocomposite synthesis involves preparation of combined solution of graphite powder, polyacrylonitrile, FeCl₃·6H₂O and NiCl₂·6H₂O in dimethylformamide, maintenance until complete dissolution of all components, removal of dimethyl formamide by evaporation and heating obtained solid residue. Preparing solution of polyacrylonitrile, graphite powder, FeCl₃·6H₂O and NiCl₂·6H₂O in dimethyl formamide is carried out at temperature of 50÷70 °C, at following component ratio: polyacrylonitrile from 2 to 5 wt % of dimethyl formamide, graphite powder from 2 to 5 wt % of dimethyl formamide, concentration of iron is from 0.3 to 1 wt %, nickel is from 1 to 3 wt % of polyacrylonitrile and graphite weight, until complete dissolution of components. Evaporation of solvent is carried out at temperature of 70÷90 °C. Thermal treatment of solid residue is carried out in several stages: preliminary heating in air for 6-14 hours at temperature of 150÷200 °C, and final heating in atmosphere of N₂ at temperature of 500-900 °C with raising temperature pitch of 100 °C and holding for 30÷60 minutes at corresponding temperatures.

EFFECT: technical result is production of FeNi₃/C nanocomposite, containing FeNi₃ nanoparticles with size from 12 to 85 nm.

1 cl, 1 ex