Membrane for the separation of carbon dioxide

Details Membrane for the separation of carbon dioxide Membrane for the separation of carbon dioxide

1994-08-09

1995-08-29

Spitzer, Robert

Gas separation: apparatus

Apparatus for selective diffusion of gases

Immobilized liquid membrane

95 44, 95 51, 96 10, 423226, 423229, 423232, B01D 5322, B01D 6908

Patent

active

054456690

ABSTRACT:
A membrane for the separation of carbon dioxide is disclosed which includes a hydrogel film of a cross-linked, vinyl alcohol/acrylic acid salt copolymer impregnated with an aqueous carrier solution containing a carbon dioxide carrier dissolved therein. A composition containing a solvent, an alkali metal carbonate or bicarbonates, and a polydentate ligand capable of forming a complex with an alkali metal ion is suitably used as the carrier solution. This composition may also be used for the preparation of a liquid film of a carbon dioxide separation membrane.

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Chemical & Engineering Process CEP 85 (1989) Mar. No. 3, pp. 58-70.

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