METHOD OF PRODUCING FINE-GRAINED BARIUM TITANATE Russian patent published in 2017 - IPC B01J3/00 C30B29/32 C01G23/04 C01F11/02 C04B35/468 C04B35/622 C04B35/626 B82B3/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: method ofproducing fine-grained barium titanate comprises treating a mixture of titanium dioxide and barium oxide powders with water vapour in a reactor in a static mode under supercritical conditions: at a temperature of 380 to 420°C and a pressure of 22.5 to 30.5 MPa for 16-48 hours, after which the reactor is cooled to room temperature, the resulting barium titanate is first dried at a temperature of 70±20°C for 10-12 hours, washed with a solution of acetic acid with a concentration of 5-10 wt %, then with distilled water and again dried at a temperature of 70±20°C to constant weight.

EFFECT: invention makes it possible to produce single-phase barium titanate with a crystal size of 40-300 nm with a high content of the basic substance.

3 cl, 8 dwg, 2 tbl, 8 ex