Kinetics of the electrolytic Fe+2/Fe+3 oxidation on various anode materials
DOI:
https://doi.org/10.3989/revmetalm.2003.v39.i4.337Keywords:
Anode, Kinetics, Ferrous ion, OxidationAbstract
The kinetics of the electrolytic Fe+2/Fe+3 oxidation, relevant to hydro-electrometallurgical processing, have been studied on lead, platinum, ruthenium oxide, iridium oxide and graphite anodes in ferrous sulfate-sulfuric acid solutions. The oxidation rate depends on ferrous sulfate concentration, solution temperature and degree of agitation. Potentiodynamic studies show that: a) the highest oxidation rate is obtained on platinum; b) lead is unsuitable as anodic material for the said reaction; c) the remaining anode materials show a similar and satisfactory performance.
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