Abstract
Fluorine evolution and electrochemical fluorination (e.c.f.) were studied on a Ni anode in anhydrous hydrofluoric acid. The perfluorination of methane sulphonyl fluoride was used as a model e.c.f. reaction. Experiments using rotating disc electrodes showed that mass transport is not a limiting factor in either case under the conditions studied. Cathodic and anodic transients were used to study the surface species formed at the Ni anode. Analysis of the data indicates that the faradaic processes can take place on a surface which may be in a higher or lower oxidation state and a mechanism is discussed on this basis.
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