METHOD OF PRODUCING NANODISPERSED METAL OXIDES Russian patent published in 2017 - IPC C01B13/36 B01J19/12 B82B3/00 B82Y30/00 C01F1/00 C01G1/02 C01F5/02 C01F7/02 C01G3/02 C01G9/02 C01G23/53 C01G25/02 C01G49/06 C01G53/04 

FIELD: chemistry.

SUBSTANCE: method of producing nanodispersed metal oxides involves forming a reaction mixture by introducing metal and carbamide nitrates into the aqueous medium in a stoichiometric ratio. The reaction medium is exposed to microwave radiation. The reaction mixture is formed directly in the reaction volume at the following component ratio, wt %: a mixture of nitrate and carbamide 10-20, water - the rest. The exposure to microwave radiation is carried out with open access to the reaction medium in the reaction volume. The intermediate reaction product is dried at a temperature of, at least, 200°C. The dried product is ground to a particle size of not more than 20 nm. During the grinding of the dried product, a hydrophobizing treatment is carried out in parallel with a hydrophobizing mixture consisting of silanes and silicone oligomers taken in the ratio, wt %: silane 17-33, silicone oligomer 67-83.

EFFECT: complete conversion of metal nitrates to oxides having prolonged resistance to agglomeration, increasing the yield of products, excluding the presence of traces of the original components in the products.

4 cl, 6 tbl, 8 ex