Periodic electrode reactions induced by mass transport

✍ Scribed by S. Szpak

• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 730 KB
• Volume: 13
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(68)87020-3

✦ Synopsis

The existence of mass-transport induced periodic electrode processes is demonstrated for the system Pt(smooth)/N,H,(O*l mole/l)/KOH(l N). On the basis of experimental evidence it is concluded that the oscillations of rest potential are governed by a set of Volterra's kinetic equations consistent with previously assumed model, ie that the rest potential for the hydraxine electrode is controlled by the formation of intermediates (radicals) derivable by partial oxidation of hydrazine. Furthermore, it is shown that the sense of rotation as well as the frequency are defined by the system itself.

R~~nademontrequeI'existencedeprocessus~~odiquesd'electrodeestproduiteparladiffusion dans le systeme Pt(lisse)/N,H,(O,l mole/l)/KOH(l N). Sur la base de l%vidence exp&imentale on a conclu que les oscillations de la tension t%ctrique redox (mixte) sont gouvemees par un ensemble d'equations de Volterra conformes au modele pr&%demment suppose; c'est 51. dire: la tension electrique redox pour l'&ctrode d'hydrazine est contrB& par la formation d'intermediaires (radicaux) r6sultant dune oxydation partielle de l'hydrazine. De plus, on a montre que le sens de la rotation ainsi que la frequence sont dt%nis par le systbme meme.