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US 7,115,243 B2Granted
Method for preparing α-alumina nano powder
AssigneeLG Chem, Ltd.
InventorsHye-Jeong Hong, Tae-Hyun Kwon, Seung-Beom Cho, Jun-Seok Nho, Dae-Gon Han
Life of this patent
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Abstract
The present invention relates to a preparation method of α-alumina nano powder, and more particularly to a preparation method of α-alumina nano powder that has a uniform particle shape and size distribution, is capable of being produced at a low temperature, and contains less than 20 ppm of alkali metals such as Na and K. the α-alumina nano powder is prepared by glycolating aluminium alkoxide in glycol solution containing the α-iron oxide or α-alumina nucleation seed and carrying out glyco thermal reaction.
Claims7
A method for preparing α-alumina nano powder, which comprises:
- a) a step of glycolation of aluminum alkoxide in glycol solution containing the α-iron oxide or α-alumina nucleation seed;
- and b) a step of glycol thermal reaction.
Dependencies are inferred from the claim text.