METHOD FOR PRODUCING NANOCRYSTALLINE POWDER OF MOLYBDENUM OXYCARBIDE Russian patent published in 2018 - IPC C01B32/907 C01B32/15 C01B31/34 C01G39/02 B01J23/28 B01J27/22 B01J21/18 B01J37/34 C30B30/02 C30B29/22 B22F9/14 B22F9/16 B82B3/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: method of producing nanocrystalline powder of molybdenum oxycarbide includes evaporation of oxygen-containing compounds of molybdenum at a high temperature in an atmosphere containing an inert gas, followed by the condensation upon cooling. The powder of molybdenum trioxide is used as the oxygen-containing molybdenum compound, the evaporation is carried out in the presence of urea taken in the ratio of molybdenum trioxide: urea = 1:1, in terms of the plasma precondensation in the low-temperature nitrogen plasma at a temperature of 4000÷6000°C with the power of the plasma torch 2.4÷3.6 kWh at a flow rate of plasma 50÷55 m/s and a feed rate of powder of 150-200 g/h, and cooling is carried out in a stream of nitrogen, followed by the vortex cycloning and capture on the fabric filter.

EFFECT: invention makes it possible to obtain molybdenum oxycarbide with a structure of the NaCl type without foreign impurities with a particle size of not more than 30 nm in an environmentally safe manner.

2 ex, 2 dwg