METHOD OF OBTAINING MESOPOROUS NANOSIZED CERIUM DIOXIDE POWDER (VERSIONS) Russian patent published in 2014 - IPC C01F17/00 B22F9/24 B82B3/00 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry, to production of nanosized powders of metal oxides for fine-grained ceramics of broad spectrum. Method of obtaining cerium dioxide powder includes stages: obtaining water 0.05M solution of cerium nitrate or cerium acetate, using Ce(NO₃)₃·6H₂O or Ce(CH₃COO)₃·H₂O, obtaining alcohol solution of stabiliser of sol of organic N-containing compound: N,N-dimethyloctylamine, tetraethylammonium hydroxide or monoethanolamine with concentration 0.45-3.30M, 0.37M and 0.016M, obtaining sol in water-organic system by combination of composed solutions, evaporation of water-organic system, formation of gel and thermal processing of gel in the interval of temperatures 95-500°C by step-by-step schedule, with application as sol stabilser of one of the following low-molecular organic N-containing compounds (N): N,N-dimethyloctylamine, tetraethylammonium hydroxide or monoethanolamine in form of alcohol solution with molar ratio N/metal, equal 1-20.

EFFECT: invention ensures technologically easily realised, economically efficient and non-toxic obtaining mesoporous nanopowders of cerium dioxide.

8 cl, 16 dwg, 1 tbl, 17 ex