Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1993-02-26
1995-10-03
Tung, T.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204130, 204242, 204267, 204277, 204278, 204421, 204424, 204427, C25B 900, G01N 27406
Patent
active
054549230
ABSTRACT:
A process and system for removing trace amounts of oxygen as an impurity in inert gases is disclosed. The process and system involve an electrochemical cell containing an oxygen ion transporting, solid state metal oxide electrolyte having a high thermodynamic potential and having only one thermodynamically stable valence state for the metal ion component of the electrolyte. The electrolyte is coated with a perovskite anode and a metallic cathode. Operation is conducted at high voltages, e.g., 1.5 volts and above, at elevated temperatures. Purification of inert gases to an oxygen content of about 1 ppm is readily achievable.
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Nachlas Jesse A.
Taylor Dale M.
Ceramatec, Inc.
Tung T.
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