Method of creating silica ceramic membranes

Details Method of creating silica ceramic membranes Method of creating silica ceramic membranes

1991-10-08

1993-03-16

Sever, Frank

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

2105101, C04B 3332, C04B 3546

Patent

active

051942003

ABSTRACT:
A method of creating a silica ceramic membrane is disclosed. The method begins with the hydrolyzing of a silicon alkoxide with ammonia until the sol is formed. The sol is dialyzed to approximately pH 8 and then acidified to approximately pH 3. The sol is then formed into a membrane by controlled evaporation followed by sintering.

REFERENCES:
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Badley, et al., Langmuir, 6: 792-801 (1990).
Brinker, et al., Solids, 48:47 (1982).
Chen, K. C., et al., "Sol-Gel Processing of Silica: I. The Role of the Starting Compounds," J. Non-Crystalline Solids 81: 227-237 (1986).
Johnson, D. W., "Sol-Gel Processing of Ceramics and Glass," Am. Ceram. Soc. Bull. 64[12]: 1597-1602 (1985).
Shafer, et al., J. Appl. Phys., 61:5438 (1987).
Stober, et al., J. Colloid Interface Sci., 26:62 (1968).
Van Helden, et al., J. Colloid Interface Sci. 81:354 (1981).

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