Inorganic phosphate aerogels and their preparation

Details Inorganic phosphate aerogels and their preparation Inorganic phosphate aerogels and their preparation

1984-12-24

1986-11-11

Doll, John

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

Catalyst or precursor therefor

Phosphorus or compound containing same

423306, 423308, 423309, 423311, 502209, 502210, 502211, 502212, 502213, 502214, B01J 2714, B01J 2718, C01B 1516, C01B 2516

Patent

active

046223100

ABSTRACT:
The invention is directed to inorganic phosphate aerogels and the method of preparing such inorganic phosphate aerogels which are characterized by high surface areas and high pore volume. The preparation comprises reacting an inorganic alkoxide or metal salt with a phosphate to form a gelled or colloidal material which is further treated with a fluid at or above its critical temperature and pressure to extract the solvent which is then dried to remove surface water.

REFERENCES:
patent: 3147227 (1964-09-01), Hansford
patent: 3271299 (1966-09-01), Kearby
patent: 3342750 (1967-09-01), Kearby
patent: 4364855 (1982-12-01), McDaniel et al.
patent: 4478805 (1984-10-01), Langer et al.
patent: 4481302 (1984-11-01), McDaniel et al.
patent: 4535070 (1985-08-01), McDaniel et al.

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