Carbon dioxide removal using aminated carbon molecular sieves
US4810266A · kind A · utility
127Cited by
17References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1988 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Feb 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S95/903
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Acid gases such as carbon dioxide are removed from air or other gases using a unique carbon-based material. The material is a carbon molecular sieve prepared from oxygen-free precursors carbonized in the absence of oxygen. The pores of the material are then enlarged as by high temperature steaming. Alcohol amines are then used to impart an amine functionality to the materials. A gas to be treated is contacted with this material at room temperature and atmospheric pressure, with the adsorbed gas being released by heating to a moderate temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.