US Patent No: 7,938,891
Number of patents in Portfolio can not be more than 2000
Using ionic liquids
Stats
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May 10, 2011
Issued date -
Mar 17, 2008
filing date -
12/049,406
serial no -
In Force
status
Importance
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Abstract
Carbon dioxide or other gases can be separated from gas streams using ionic liquid, such as in an electrochemical cell. For example, a membrane can contain sufficient ionic liquid to reduce ionic current density of at least one of protons and hydroxyl ions, relative to carbon-containing ionic current density. A gas stream containing carbon dioxide can be introduced on a cathode side, while a source of hydrogen gas can be introduced on the anode side of the membrane. Operation of an electrochemical cell with such a membrane can separate the carbon dioxide from the gas stream and provide it at a separate outlet.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 2009/0159,456 Separating Gas Using Ion Exchange | 4 | 2007 | |
| 2010/0005,959 Separating Gas Using Immobilized Buffers | 4 | 2008 | |
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| 5,472,585 Regeneration of spent electroless copper plating solution | 15 | 1994 | |
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| 5,597,863 Immobilized buffered gels and membranes of hydroxy groups containing polymers | 7 | 1995 | |
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| 5,258,106 Electrolysis of alkali metal sulfates | 6 | 1991 | |
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| 5,876,486 Method and apparatus for removing carbon dioxide | 35 | 1996 | |
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| 6,793,711 Mixed conducting membrane for carbon dioxide separation and partial oxidation reactions | 17 | 2000 | |
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| 6,908,500 System and method for controlling gas transport in a fuel cell | 5 | 2002 | |
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| 5,133,842 Electrochemical cell having electrode comprising gold containing electrocatalyst | 27 | 1991 | |
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| 2008/0115,667 Conductive membrane for carbon dioxide separation | 3 | 2007 | |
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| 5,358,556 Membranes having selective permeability | 13 | 1993 | |
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| 6,579,343 Purification of gas with liquid ionic compounds | 54 | 2002 | |
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| 2007/0119,302 Polymers containing ionic groups for gas separation and storage | 7 | 2006 | |
Patent Citation Ranking
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