Anode coated with magnetite and the manufacture thereof

Details Anode coated with magnetite and the manufacture thereof Anode coated with magnetite and the manufacture thereof

C - Chemistry, Metallurgy

25

D

204/21.6, 204/19

C25D 7/00 (2006.01) C25D 5/00 (2006.01)

Patent

CA 1039227

ABSTRACT OF THE DISCLOSURE An anode coated with magnetite is manufactured by electrodepositing iron on a metallic substrate consisting of titanium, zirconium, tantalum, or niobium and the like in an electrolyte containing ferrous sulfate, dipping said iron coated substrate into a solution of ammonium ferric oxalate under a reduced pressure, and then heating said treated substrate in an atmosphere of a gaseous mixture of hydrogen and steam. The anode manufactured in this way is quite suitable for the pro- duction of chlorine, chlorates, and bromates, and, furthermore, it is also usable for electrolytic oxidation processes in general and as an anode for electro-winning of copper, for electrolysis of sodium sulphate, for cathodic protection, and for electro- dialysis.

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