Study on electrochemical synthesis of potassium ferrate

Abstract

The electrochemical synthesis of potassium ferrate was carried out in membrane cell with metal iron as anode and platinum as cathode in electrolysis of 13.5 mol·dm~(-3) KOH solution.The optimum temperature of synthesis is about 30℃.Current density is about 0.5 mA/cm~2.The current efficiency of the synthesis in 13.5 mol·dm~(-3) KOH solution is 58.7%.Charging voltage was varied between 1.92 to (l.83 V).Electrochemical synthesis time is about 2 to 3 hours.