Open-circuit oxygen evolution at titanium-ruthenium oxide anodes in chloride solutions

Titanium-ruthenium oxide anodes (ORTA) are known for their high electrocatalytic activity in chlorine and oxygen evolution. The authors determine the rate of oxygen evolution in chlorine solutions at open circuit at ORTA with different RuO/sub 2/ contents. An illustration is presented of the experiments conducted to determine the oxygen content of the chlorine leaving the main cell. The highly sensitive method described for determining the rate of oxygen evolution can also be used for studying the kinetics of this reaction at anodes with high catalytic activity in relatively acidic, concentrated chloride solutions at high temperatures when the indirect methods of other methods may be difficult to use.