衣宝廉. A New Method for Measuring the Loss of CurrentEfficiency Owing to Cathodic Secondary Reactionsin the Production of Chlorate[J]. CIESC Journal, 1986, (4).
衣宝廉. A New Method for Measuring the Loss of CurrentEfficiency Owing to Cathodic Secondary Reactionsin the Production of Chlorate[J]. CIESC Journal, 1986, (4).DOI:
An electrolytic cell with a dual cathode consisting of a Ni screen cathode and a poroun gas-diffusion oxygen cathode separated from each other by a porous diaphragm
has been constructed for measuring the loss of current efficiency. The reduction of oxygen and the reduction of HClO or C1O- could take place only on the oxygen cathode and Ni cathode
respectively. While the Ni cathode potential is higher than that for the evolution of H2
the Ni cathode current is responsible for the cathodic secondary reactions. The dependence of cathodic secondary current on the concentration of NaClO3
pH of the solution and the presence of Na2Cr2O7 has also been investigated. This method is also applicable to investigating the loss of cathode current efficiency for the production of chloro-alkali