The synthesis of manganese(III) acetate in bipolar packed-bed and trickle-bed electrode cells

In this research, the electrochemical oxidation of Mn(II) acetate to Mn(III ) acetate was investigated in aqueous acetic acid solution, using a bipolar particulate electrode cell. In order to determine the effect of flow modes on the yield of Mn(III) acet ate, which is an important oxidizing agent and catalyst in organic reaction s, a bipolar particulate electrode cell was employed both in flooded and tr ickle flow modes. The experiments were conducted at controlled potentials of 50-250 volts usi ng the solution (10% H2O, 90% CH3 COOH, 0.1 M Mn(CH3 COO)(2). 4H(2)O, 0.1 M . CH3 COONa . 3H(2)O) and at an optimum flow rate of 0.04 ml.s(-1) The values of space-time yields for both electrode cells gave a maximum at about the same voltage range (4.5-5 V/number of layer). The maximum values obtained with approximately identical energy consumption values were 36.13 kg.m(-3).h(-1) and 23.73 kg.m(-3).h(-1) in a bipolar packed-bed and trickle -bed electrode cell, respectively. Thus, the effectiveness of the flow modes using a bipolar particulate elect rode cell has been demonstrated for the electrosynthesis of Mn(III) acetate .