Ceramic membranes with enhanced thermal stability
US5215943A · kind A · utility
19Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1991 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Jul 2, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/46
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of creating a ceramic membrane with enhanced thermal stability is disclosed. The method involves combining quantities of a first metal alkoxide with a second metal, the quantities selected to give a preselected metal ratio in the resultant membrane. A limited amount of water and acid is added to the combination and stirred until a colloidal suspension is formed. The colloid is dried to a gel, and the gel is fired at a temperature greater than approximately 400.degree. C. The porosity and surface area of ceramic membranes formed by this method are not adversely affected by this high temperature firing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.