Temperature-kinetic studies of anodic selection of chlorine on metal oxide anodes

Abstract

Temperature-kinetic studies of anodic selection of chlorine on metal oxide anodes

Fesenko L.N., Kagan E.Sh., Lipkin S.M., Jeberil' V.I., Goncharov I.A., Spasibova V.S.

Incoming article date: 18.01.2017

The estimation of the dependence of anode potential of the temperature and current density. It is established that the activation energy of the anodic oxidation process HORTA, HORTA-I1 and OITA decreases with increasing potential, which corresponds to the limiting stage of charge transfer. The activation energy of the anodic process refers to the collective processes of transformation of the catalytic coating and anodic oxidation of the chloride ions. The latter process limits the adsorption of atomic chlorine, and the increase in activation energy is correlated with increased corrosion resistance. The dependence of the activation energy of from the content in the catalytic layer of iridium has an extreme character. The maximum is reached when the content of iridium 60-70%.

Keywords: ORTA, ORTA-I1, OITA, activation energy, anodic oxidation, adsorption of chlorine, sodium hypochlorite, chlorine, charge transfer, a mixed oxide, electrode potential