Polymeric membrane
AssigneeL'Air Liquide
InventorWilliam J. Koros
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Abstract
Polymeric gas separation membranes having a separating layer with a high entropic effect are disclosed. Such membranes may provide enhanced gas separation properties for polymeric membranes. A process for making improved gas separation membranes is also disclosed.
Claims9
A process for separation of a first gas from a second gas which comprises providing a gas separation membrane comprised of a polymeric separating layer with a selectivity effect greater than 1.3, wherein the first and second gases are contacted with an aperture within said polymeric separating layer which restricts at least one rotational and/or transitional degree of freedom in the second gas relative to the first gas so as to form a permeate gas rich in the first gas and a residue gas rich in the second gas.
A gas separation membrane having a morphology comprising a polymeric separating layer with the membrane morphology being such as to have an entropic selectivity effect greater than 1.3.
Dependencies are inferred from the claim text.