Original scientific paper

Properties and Use of a Lead Cathode at Very Negative Potential

Z. Vajtner ; Pliva Research Department, 41000 Zagreb, Yugoslavia
M. Lukić ; Pliva Research Department, 41000 Zagreb, Yugoslavia

Abstract

The properties of lead cathodes at a very negative potential were studied on the basis of recent reports. The effects of the following factors on the »cathodic corrosion « of lead as well as on the preparative reduction of cyclohexanone as a test substance at lead cathode were investigated: the charge, current density, electrolyte composition, kind of the lead foil with respect to lead purity. The results of preparative electroreductions using both mercury and lead cathodes in identical reaction conditions were compared and discussed with regard to more practical aspects of their realization. The relation between the results obtained for the »cathodic corrosion« and for the overall cathode reaction at a lead cathode was also discussed. It was presumed that the overall reduction of cyclohexanone in the reaction conditions described in the paper (constant current density) consisted of two competitive reactions: a minor part of direct electron transfer and a predominant part of an indirect reduction using tetraalkylammonium lead.

Keywords

Hrčak ID:

137408

URI

https://hrcak.srce.hr/137408

Publication date:

10.8.1990.

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