Gas separation using adsorbent activated carbonized polyarylamides
US5389350A · kind A · utility
6Cited by
4References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 9, 1992 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Jul 9, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F9/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Novel polyarylamide derived activated carbon materials are provided by a process comprising the carbonization of polyarylamide fibre at a temperature in excess or 400.degree. C. followed by activation at elevated temperature. The novel materials have the ability to adsorb relatively large quantities or carbon dioxide compared to other activated carbonized polymer materials, Preferably the carbonization and activation steps are carried out by raising the temperature of the materials to between 840.degree. C. and 880.degree. C. in carbonizing/activating atmospheres respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.