Comportement électrochimique du ferrocène, du pérylène et du tétracène dans une électrode à pâte de carbone à liant électrolytique dans les mélanges eau–acide phosphorique

Abstract

The carbon dough electrode with incorporated electrolyte has been used to analyse the electrochemical behaviour of ferrocene, tetracene and perylene in phosphoric acid media 0.1 to 14.8 M. The cyclic voltammetry results obtained for ferrocene with the carbon dough electrode corroborate with polarographic data. Voltamperometric study of the aromatic hydrocarbon oxidation Ar such that of perylene and tetracene on the carbon dough electrode has allowed to establish the normal potential of the corresponding oxido-reducing systems. The existence of the four oxidation states: Ar, Ar⁺, ArH⁺ and Ar²⁺ at different concentrations of phosphoric acid is specified. The results of this study can be used to establish correlations between some of concentrated solution properties of different acids.