The E/I curve related to the electrochemical oxidation of iodide dissolved in molten nitrates on a platinum rotating disk electrode involves two anodic waves. The Srst corresponds to a reversible two-electron process and the second to a reversible one-electron process. A definite ratio between the a
Rotating disk electrode in sodium and potassium nitrate melts
β Scribed by J.E.L. Bowcott; B.A. Plunkett
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 350 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0013-4686
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β¦ Synopsis
Abstractsilver
has been deposited on to a rotating disk electrode from molten NaNOt and from mixture of NaNOI, and KNOII. The limiting currents show that, for this system at least, the approximations which can be applied to a system containing three ions are equally applicable where there are more than three ions as long as the reacting ion is present at a low concentration.
Rbslrm&L'argent a Bt& depost de fondus de NaNO, et de mClanges de NaNO* et KNO, sur une tlectrode B disque toumant. L.es courants limitants dkmontrent que, au moins pour ce systhme, les approximations applicables a un syst&me contenant trois ions sont 6galement applicables quand il y a plus que trois ions, si l'ion r&ctant est pr&ent & une concentration basse.
Zuwmmenfassung-Man
untersuchte die Abscheidung von Silber aus gescbmolzenem NaNOs und aus geschmolzenen NaNOs/KNO,-Gemischen an einer rotierenden Scheibenelektrode. Die Grenzstrijme zeigen, dass, zumindest fiir dieses System, die Nglherungen, welche fti Systeme mit drei Ionen giiltig sind, sich such auf Gemische mit mehr als drei Ionenarten anwenden lassen, falls das reagierende Ion in geringer Konzentration vorliegt.
π SIMILAR VOLUMES
A rotating disk electrode assembly for use in cryolitic melts at 1020" K is described. The electrodes press-fitted into a boron nitride insulation are made of tungsten plated with gold or of titanium diboride. The performance of the rotating disk system is tested by measuring limiting currents for M
The diffusion coefEcients of AgO have been measured in molten mixtums of NaNO, and KNO, with varying molar ratios, by a linear diffusion cell of variable path length. The results b are quoted for temFtures below 420% in the form of an empirical equation loga D = --a -f. Diffusion coe5cients are not