摘要 |
Oxygen-separating porous membranes, intended for use in oxygen-enriching processes, typically for combustion gas production, medical treatment, etc., characterized by a complex comprising (a) a transition metal (II) ion, and (b) a ligand taken from the group consisting of (1) porphyrins, (2) Schiff bases, (3) cyclidenes, and (4) amine-like macrocycles, and (c) an aromatic amine, said complex retained in the pores of a porous substrate, the mean free pore diameter of said porous membrane being in the range of 3.5 to 100 ANGSTROM .
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