Method of preventing deterioration of palladium oxide anode in a diaphragm type alkali metal chloride electrolytic cell.

摘要

A deterioration of a palladium oxide type anode is prevented which is caused by stopping an operation of a diaphragm type electrolytic cell for electrolysis of an alkali metal chloride comprising increasing a concentration of hypochlorite ions in an anolyte to give a predominant anode potential in shortcircuit state higher than a reduction potential of palladium oxide.