METHOD OF OBTAINING NANOSIZE η-MODIFICATION OF TITANIUM DIOXIDE Russian patent published in 2012 - IPC C01G23/53 B82B1/00 B82Y99/00 

FIELD: chemistry.

SUBSTANCE: method of obtaining nanosize η-modification of titanium dioxide by sulfate method includes mixing powder-like TiOSO₄·xH₂SO₄·yH₂O with water, heating mixture for carrying out hydrolysis, further addition of coagulant, cooling and separation of precipitation by filtering. Precipitation is washed with water and acetone and dried. For more complete titanium dioxide precipitation mixing powder-like TiOSO₄·xH₂SO₄·yH₂O with water is carried out with weight ratio TiOSO₄·xH₂SO₄·yH₂O:H₂O=1:(3.5÷6.5). Heating is performed at temperature 75-97°C. As coagulant used is potassium chloride solution with its content 1.5-4 mol/l in final volume of reaction mixture.

EFFECT: invention makes it possible to simplify process of obtaining nanosize titanium dioxide, reduce its toxicity, increase product output.

4 dwg, 4 ex