| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to inorganic chemistry, particularly to a method of producing aluminium oxide nanocrystals. An aluminium compound is mixed with cellulose in water until formation of a homogeneous disperse phase. The disperse phase is filtered and heated to 500-850C. The obtained aggregated aluminium oxide is put into an autoclave where it undergoes hydrothermal processing in an acidic medium containing an aqueous solution of an acid with concentration of 0.08-2.20 wt %, at temperature 180-220C for 4-26 hours. The obtained nanosized boehmite is dried and annealed at 800-850C for 2-3 hours. The aluminium compound is selected from aluminium chloride, nitrate, sulphate or hydroxide. The aluminium compound is mixed with cellulose in weight ratio of 1:1.3-2.0, respectively. ^ EFFECT: invention enables to obtain a homogeneous phase of non-aggregated non-crystalline aluminium oxide with grain composition in which the predominant particle size is less than 100 nm. ^ 3 cl, 1 tbl, 3 dwg, 5 ex |
