The Study on the Consumption of Graphite Anodes in the Electrolysis of Aqueous Solutions

II Effect of the baking temperature of the electrodes

Abstract

Following the first paper, we examined the consumption of carbon anodes baked at various temperatures in the electrolysis of caustic soda and sulphric acid. It was found that the remarkable change of consumption occurred at the baking temperature between 1500 and 1900°C, and the electrodes baked below 1500°C resembled each other in one side, and those baked above 1900°C, and of the artificial graphite resembled each other in another side.
It was found also that the effect of SO₄⁼ was very weak in the concentrated alkaline solutions, and that in dilute alkaline solution the effect of SO₄⁼ appeared and the consumption of the electrodes increased.