Claims
- 1. A method of purifying gaseous carbon dioxide comprising passing a stream of carbon dioxide through (a) a zeolite selected from the group consisting of 3A, 4A, 5A and combinations thereof, (b) a metal oxide, (c) a silica gel selected from the group consisting of alumina-stabilized silica gel, magnesia-stabilized silica gel, and the combination thereof, (d) activated carbon, (e) silica gel and (f) silicalite, and recovering purified carbon dioxide.
- 2. The method of claim 1 wherein the metal oxide is selected from the group consisting of molybdenum oxide and tungsten oxide.
- 3. The method of claim 1 wherein the purified carbon dioxide is depleted in water, compounds containing greater than about 10 carbon atoms, sulfur-containing compounds, nitrogen-containing compounds, oxygen-containing compounds and organic compounds.
- 4. A method of purifying gaseous carbon dioxide comprising passing a stream of carbon dioxide through (a) a zeolite selected from the group consisting of 3A, 4A, 5A and combinations thereof, (b) a metal oxide, (c) a silica gel selected from the group consisting of alumina-stabilized silica gel, magnesia-stabilized silica gel, and the combination thereof, (d) activated carbon, (e) silica gel (f) a zeolite selected from the group consisting of silicalite, ZSM-5, ZSM-12, ZSM-23 and combinations thereof, (g) a silver-exchanged faujasite, and (h) a reduced metal on a matrix material, and recovering purified carbon dioxide.
CROSS REFERENCE TO RELATED APPLICATION
This application claims the benefit of priority of our co-pending Provisional Application Serial No. 60/126,490 filed Mar. 26, 1999.
US Referenced Citations (28)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0586830 |
Mar 1994 |
EP |
1565498 |
May 1990 |
SU |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/126490 |
Mar 1999 |
US |