Method for making monolithic metal oxide aerogels
US5395805A · kind A · utility
51Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Mar 25, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B38/0045
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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 present invention is especially advantageous for making metal oxides other than silica that are prone to forming opaque, cracked aerogels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.