Membranes comprising salts of aminoacids in hydrophilic polymers

Details Membranes comprising salts of aminoacids in hydrophilic polymers Membranes comprising salts of aminoacids in hydrophilic polymers

1995-07-07

1997-03-18

Spitzer, Robert

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

96 13, 96 14, 525 61, B01D 5322, B01D 7128

Patent

active

056118430

ABSTRACT:
The present invention is directed toward a composition suitable for use in separating CO.sub.2 from gas streams containing CO.sub.2 especially H.sub.2 rich gas streams containing CO.sub.2 and CO. The composition comprises a hydrophylic polymer and at least one salt of an aminoacid, the salt of the aminoacid being present in an amount ranging from about 10 to about 80 wt % based on the total weight of the composition.

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D.L. Ellig et al., "Concentration of Methane from Mixtures with Carbon Dioxide by Permeation Through Polymeric Films", J. Membr. Sci, No. 2, Apr. 1980, 259-263.

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