Role of inhibition by anion adsorption in oscillatory phenomena produced in the course of electrocatalytic reduction of nitric acid at a platinized platinum electrode

G. Horányi, E. M. Rizmayer

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Oscillatory phenomena occurring in the course of the reduction of nitric acid at a platinum electrode which were induced by the presence of chloride ions are presented. Both galvanostatic potential oscillations and potentiostatic current oscillations were observed. The influence of different parameters (concentration, current, potential) on the oscillatory behaviour was studied. By use of in situ radiotracer adsorption measurements it has been shown that the periodical changes of electrochemical parameters were coupled with those of chloride ion adsorption. Open-circuit potential oscillations were observed in a hydrogen atmosphere. This observation attests that the external electric circuit does not play a role in the generation of the galvanostatic oscillations. An attempt was made to give an explanation of the phenomena observed under galvanostatic and open-circuit conditions.

Original languageEnglish
Pages (from-to)323-336
Number of pages14
JournalJournal of Electroanalytical Chemistry
Volume143
Issue number1-2
DOIs
Publication statusPublished - Jan 10 1983

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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