Abstract
Electrophysical, electrochemical, and corrosion properties of iron-oxide-titanium anode (IOTA) in the electrolysis of chloride solutions are studied. An optimum thickness of the active mass of the IOTA coating (300 μm) is substantiated. The anode lifetime during the production of sodium hypochlorite and electrotreatment of brackish water is defined by the corrosion wear of the coating active mass and is nine to ten thousand hours. Electrocatalytic properties of IOTA can be significantly improved by alloying the active mass of ferric–ferrous oxides with cobalt oxide during a plasma enhanced vapor codeposition of ferric–ferrous and cobalt oxides on a titanium support. An optimum ratio between ferric–ferrous and cobalt oxides in the active mass of the modified anode coating (IOTA-C) is determined. Electrocatalytic properties of IOTA-C in the sodium hypochloride production are identical to those of conventional DSA.
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