Method for fabricating porous composite oxide
AssigneeSamsung Electronics Co., Ltd.
InventorsHo-jin Kweon, Kae-dong Baek, Soon-kyo Hong, Dong-gon Park, Hye-jin Kim
Life of this patent
Estimating the term…
Abstract
A method for fabricating a porous composite oxide is provided. The method includes the steps of: (a) slowly mixing a solution including a silicon oxide source and a solution including an aluminum oxide source; (b) adding hydrochloric acid to the mixed solution prepared in said step (a) to obtain a sol; and (c) adding sodium hydroxide to said sol, reacting the obtained resultant at room temperature for 30 minutes to 12 hours, and drying the resultant. The porous composite oxide has an abundance of fine pores and the distribution of pore size is relatively uniform, so that the porous composite oxide is suitable for a carrier.
Claims9
A method for fabricating a porous composite oxide comprising the steps of:
- (a) mixing a solution including a silicon oxide source and a solution including an aluminum oxide source to form a mixed solution wherein the mole ratio of silicon to aluminum of said mixed solution is 1.about.3 and wherein the temperature of the mixed solution is heated to a temperature between 50.degree. C. to less than 100.degree. C.;
- (b) adding hydrochloric acid to the mixed solution prepared in said step (a) to obtain a transparent sol until the pH of the transparent sol reaches 3.about.12;
- and
- (c) adding sodium hydroxide to said transparent sol, reacting the obtained resultant at room temperature for 30 minutes to 12 hours, and drying the resultant.
Dependencies are inferred from the claim text.