Sol-gel process utilizing reduced mixing temperatures
US6884822B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2002 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Apr 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249969
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of manufacturing a xerogel monolith having a pore diameter distribution includes preparing a first solution comprising metal alkoxide and preparing a second solution comprising a catalyst. A third solution is prepared by mixing the first solution and the second solution together. At least one of the first, second, and third solutions is cooled to achieve a mixture temperature for the third solution which is substantially below room temperature, wherein the third solution has a significantly longer gelation time at the mixture temperature as compared to a room temperature gelation time for the third solution. The method further includes allowing the third solution to gel, thereby forming a wet gel monolith. The method further includes forming the xerogel monolith by drying the wet gel monolith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.