Journal of The Electrochemical Society · 1981 · 27 citations · 0 references
Natural SciencesChemical EngineeringChemistryElectrochemistryInorganic ChemistryWater TreatmentCharge Transfer ReactionsElectroanalytical ChemistryElectrochemical CellsElectrochemical KineticsElectrolysis ProcessesElectrolyte SolutionsBrine ChemistryChlorate ReductionChlorinated Pollutant FormationChlorinationChlorine ChemistryCurrent EfficiencyElectrochemical ReactionsElectrochemical Reduction
Sodium chlorate is formed from the chemical combination of and ions. It is reported to be a third‐order reaction involving 2 moles of and 1 mole of . Contrasting literature data depict this reaction as bimolecular, involving 2 moles of only. Experimental results presented here clearly resolve the formation reaction to be apparent third order. Dichromate, added in concentrations of 2–5 g/l during brine electrolysis to achieve high current efficiency, fulfills two key functions: (i) enhancement of buffer action in the pH region of 5–7; and (ii) prevention of adverse and electrochemical reduction reactions. Experimental evidence is presented elucidating the above observations.