Enhancing performance of perfluorinated ionomer membranes via do

Details Enhancing performance of perfluorinated ionomer membranes via do Enhancing performance of perfluorinated ionomer membranes via do

1992-08-25

1995-05-23

Gorgos, Kathryn

Chemistry: electrical and wave energy

Apparatus

Electrolytic

521 27, 26433114, C25B 1308

Patent

active

054178320

ABSTRACT:
The present invention describes a perfluorinated ionomer membrane having a improved transport characteristics. A surfactant species is added to a polymer mixture prior to film casting. The resulting membranes have a measurably altered membrane microstructure and improved transport characteristics over prior art membranes. The present invention describes the method of producing the improved membranes. The membranes of the present invention are useful in a number of separation processes, including the separation of NH.sub.3 from gaseous and liquid mixtures, in the production of NaOH and Cl.sub.2 gas from the electrolytic dissolution of NaCl, in the separation of toxic and radioactive metals from aqueous streams, and in solid polymer electrolyte H.sub.2 /O.sub.2 fuel cells.

REFERENCES:
patent: 4678581 (1987-07-01), Nogi et al.
patent: 4738764 (1988-04-01), Chlanda et al.

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