Production of Ozone with Refrigerated Anodes

Abstract

By electrolysis of 40 weight per cent perchloric acid with refrigerated platinum metal anodes, electrolytic ozone of 58 weight per cent concentration has been prepared at energy efficiencies up to 24 grams ozone per kwhr. Maximum yields of ozone were at-tained with the internally cooled anode at-60 ~ to-65 ~ perchloric acid electrolyte at a bulk electrolyte temperature of-56 ~ current density of 0.13 to 2.6 amp/din 2,and a total pressure above the electrolyte of 10-100 mm Hg. Ozone current efficiency, weight per cent ozone, and grams of ozone per kwhr increase with decreasing anode and electrolyte t mperatures, and with increasing current density.