Studies Relating to Electrolytic Preparation of Potassium Bromate

Abstract

The electrochemical preparation of potassium bromate (KBrO3) from potassium bromide (KBr), using a noble-metal oxide coated titanium anode and a stainless steel cathode, is described. The effect of different anode materials, anode current density, pH, and temperature of the electrolyte on the current efficiency for the preparation of KBrO3 was studied. A maximum current efficiency of 97% was achieved when 240 g/L of bromide (pH 6.0) is electrolyzed at an anode and cathode current density of 20.0 A/dm2 and a temperature of 333 K.