Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1988-01-29
1989-02-07
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
2041415, 204144, 2041445, 422 12, 422 13, 422 17, 134 2214, 134 2219, C25F 100
Patent
active
048029629
ABSTRACT:
A method of treating the surface of a cathode in order to remove therefrom deposited iron, the cathode comprising a metallic substrate at least part of the surface of which has been activated in order to reduce the hydrogen overvoltage at the cathode when the cathode is used in the electrolysis of water or aqueous solutions, and the method comprising contacting the surface with a liquid medium which reacts with and solubilizes the deposited iron.
Removal of deposited iron results in a decrease in the hydrogen overvoltage of the cathode. The liquid medium may be an aqueous acidic solution and the cathode may be contacted with the liquid medium in situ in the electrolytic cell.
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Encyclopedia of the Electrochemistry of the Elements, vol. IXa, pp. 462-465, 498-501 and 546-548, Editor; A. Bard, Marcel-Dekker.
Gorgos Kathryn
Imperial Chemical Industries plc
Niebling John F.
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