Silica membrane and method for manufacturing the same
US9108166B2 · kind B2 · utility
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2References
4Claims
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Key dates
| Filing date | Jul 14, 2011 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Apr 17, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/28
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided a silica membrane 1 formed on a porous substrate. A desorbed ionic strength of water having a temperature of 500° C. in a temperature-programmed desorption analysis of water of the silica membrane is 2,000,000/g. The silica membrane 1 is manufactured by allowing a silica sol having a water concentration of 0.03 to 3 mass % to adhere to a porous substrate by an ethanol solvent, drying the silica sol by sending air having a dew point of −70 to 0° C., and firing the dried silica sol at 200 to 400° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.