Method of preparing a diaphragm having a gel of a hydrous oxide of zirconium in a porous matrix
US4170537A · kind A · utility
13Cited by
11References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1978 |
| Grant date | Oct 9, 1979 |
| Priority date | — |
| Expiry date | Oct 20, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B13/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a method of preparing a hydrous zirconium oxide diaphragm by treating a porous matrix with ZrOCl.sub.2 and hydrolyzing the ZrOCl.sub.2 to ZrO.sub.2 with NH.sub.3. The disclosed method contemplates leaching out the NH.sub.4 Cl, dehydrating the substrate, and sequentially building up the ZrO.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.