| 摘要 |
An improvement in a method for separating a hydrolysis product of an aluminum alkoxide into two layers of a higher alcohol layer and an aqueous layer containing readily precipitatable hydrated alumina in a suspended state. The hydrolysis reaction mixture is heated, either during or after the hydrolysis, at a temperature of 130 DEG -250 DEG C. in the presence of an ammonium, sodium or potassium salt of carbonic acid, hydrochloric acid, nitric acid, sulfuric acid, hydrobromic acid, phosphoric acid, formic acid, acetic acid or oxalic acid. The hydrated alumina is separated from the aqueous layer and the separated hydrated alumina is markedly low in content of impurities of organic matters.
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