Method of making metal oxide ceramic membranes with small pore sizes
US5169576A · kind A · utility
12Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Feb 11, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00177
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for the production of metal oxide ceramic membranes is composed of very small pore size. The process is particularly useful in the creation of titanium and other transition metal oxide membranes. The method utilizes a sol-gel process in which the rate of particle formation is controlled by substituting a relatively large alcohol in the metal alkoxide and by limiting the available water. Stable, transparent metal oxide ceramic membranes are created having a narrow distribution of pore size, with the pore diameter being manipulable in the range of 5 to 40 Angstroms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.