Process for producing porous silicon oxide material

Details Process for producing porous silicon oxide material Process for producing porous silicon oxide material

1995-06-21

1997-02-04

Lewis, Michael

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

Clay

502232, 502407, 423325, B01J 2116

Patent

active

055997597

ABSTRACT:
A process for producing a heat-resistant and high-purity porous silicon oxide material having excellent crystallinity and uniformity in pore size. The process includes: a first step of dispersing a substance containing silicon in an aqueous solution of a surfactant and adjusting the pH of the dispersion to a value of 10 or higher; a second step of adjusting the pH thereof to a value lower than 10 and forming a composite of a silicon oxide and a surfactant; and a third step of removing the surfactant from the composite. A water-soluble component is preferably removed from the dispersion between the first and second steps.

REFERENCES:
patent: 5057296 (1991-10-01), Beck
patent: 5110573 (1992-05-01), Johnson
patent: 5382558 (1995-01-01), Inagaki
patent: 5393329 (1995-02-01), Inagaki et al.
US Pat. Ser. No. 08/192,933 Feb. 7, 1994 Inagaki, et al.
US Pat. Ser. No. 08/192,962 Feb. 7, 1994 Inagaki, et al.

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