| 摘要 |
<p>Disclosed is a porous titanium oxide improved in ultraviolet protection ability, usability and transparency in the visible region. Also disclosed is a method for producing such a porous titanium oxide. The porous titanium oxide is obtained by adding an alkali into a titanium salt solution containing a polyhydric alcohol, and then heating and hydrolyzing the resulting. After addition of an alkali, an acid may be further added thereto and then the resulting is heated and hydrolyzed. Alternatively, after the heating and hydrolysis, the resulting may be subjected to a heat treatment with an acid. The porous titanium oxide has an average particle diameter of 0.01-1.0 mum and a specific surface area of not less than 50 m2/g.</p> |
