Free Access
J. Chim. Phys.
Volume 95, Number 3, March 1998
Page(s) 497 - 512
DOI: 10.1051/jcp:1998164

J. Chim. Phys. Vol. 95, N°3  p. 497-512

Kinetic data for the hexacyanoferrate (II)/(III) couple on platinum electrode in various chlorides of monovalent cations

D. Krulic1, N. Fatouros1 and D.E. Khoshtariya2

1  Laboratoire d'Électrochimie (LI2C), Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris cedex 05, France
2  Institute of Inorganic Chemistry and Electrochemistry, Georgian Academy of Sciences, Jikiya 7, Tbilisi 380086, Georgia

An experimental study of the hexacyanoferrate (II)/(III) couple at a platinum disc electrode in hydrochloric acid, in alkali metal, ammonium and tetraalkylammonium chlorides solutions is carried out. Diffusion coefficients, equilibrium potentials and transfer rate constants are determined. Our results complete those previously published and clearly show a correlation between the magnitude of the apparent charge transfer rate constant and the extent of cation association with both hexacyanoferrate (II) and (III) anions.

Le comportement du couple haxacyanoferrate (II)/(III) est étudié sur une électrode à disque de platine en présence d'acide chlorhydrique et de chlorures de métaux alcalins, d'ammonium et de tétraalkylammonium. Des coefficients de diffusion, des potentiels d'équilibre et des constantes de transfert de charge sont déterminés. Nos résultats complètent les données déjà disponibles et montrent une nette corrélation entre la valeur de la constante apparente du transfert de charge et le degré d'association des anions hexacyanoferrates (II) et (III) avec les cations de l'électrolyte support.

Key words: electrochemical kinetics of hexacyanoferrate (II) -- (III) couple -- equilibrium potentials -- diffusion coefficients -- rate constants

© EDP Sciences 1998

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.