Method for making monolithic metal oxide aerogels

Details Method for making monolithic metal oxide aerogels Method for making monolithic metal oxide aerogels

1998-10-29

1999-09-28

Straub, Gary P.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423608, 423630, 25231501, 2523156, 2523157, 501 72, 501 85, C01B 1314, C01G 2502, B01J 1300, C04B 3800

Patent

active

059583630

ABSTRACT:
Transparent, monolithic metal oxide aerogels of varying densities are produced using a method in which a metal alkoxide solution and a catalyst solution are prepared separately and reacted. The resulting hydrolyzed-condensed colloidal solution is gelled, and the wet gel is contained within a sealed, but gas permeable, containment vessel during supercritical extraction of the solvent. The containment vessel is enclosed within an aqueous atmosphere that is above the supercritical temperature and pressure of the solvent of the metal alkoxide solution.

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D. M. Smith et al., "Aerogel Synthesis Using Extractive Drying," Mat. Res. Soc. Symp. Proc. vol. 431, 1996 Materials Research Society, pp. 291-296.

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