Gas separation: apparatus – Apparatus for selective diffusion of gases – Immobilized liquid membrane
Reexamination Certificate
2011-05-10
2011-05-10
Greene, Jason M (Department: 1775)
Gas separation: apparatus
Apparatus for selective diffusion of gases
Immobilized liquid membrane
C096S004000, C096S010000, C096S011000, C096S012000, C095S045000, C095S051000, C429S483000, C429S499000
Reexamination Certificate
active
07938892
ABSTRACT:
Ionic liquids can be immobilized in a membrane by, for example, bonding to a support such as a matrix, or by inclusion within a gel. Immobilized ionic liquids can be used in a number of applications, such as separation of carbon dioxide or other gases from gas streams. Membranes can be included in electrochemical cells. For example, a membrane can contain sufficient immobilized 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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Greene Jason M
Hollingsworth & Funk LLC
Palo Alto Research Center Incorporated
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