Method and apparatus for lessening ionic diffusion

Details Method and apparatus for lessening ionic diffusion Method and apparatus for lessening ionic diffusion

1977-11-22

1979-10-30

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204180P, 204252, 204253, 204295, 204296, C02C 512, B01D 1302

Patent

active

041727746

ABSTRACT:
A membrane assembly, useful as a membrane in electrodialytic and electrolytic cells, is made by holding together a plurality of thin layers of membrane material under pressure and with boundary layers of liquid covering their major surfaces. Such membrane assemblies allow the passage therethrough of ions when an electric potential difference is impressed across the membrane assembly but effectively bar the passage of water and gases. They also bar or limit ionic and salt mass transfer in the absence of such a potential difference (during non-use of the cell). They make excellent long lasting cell components, capable of being manufactured simply and economically from any of a variety of membrane materials to produce membranes of desired properties.

REFERENCES:
patent: 3488276 (1970-01-01), Tarsey
Hampel, Encyclopedia of Electrochemistry, (1964), pp. 179 and 808-810.

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