Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1977-04-20
1978-08-29
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204290R, 204290F, C25B 124
Patent
active
041101804
ABSTRACT:
In a method and apparatus for electrolyzing an aqueous bromide containing electrolyte to form bromine by passing an electrolysis current through said electrolyte between a cathode and an anode comprising at least a valve metal base which is exposed to the electrolyte over at least part of its surface, the improvement comprising maintaining a breakdown voltage at the valve metal base of the anode in excess of 2 volts (NHE) which may be effected, for example, by using a base consisting of a titanium alloy containing up to 10% by weight of at least one member of the group consisting of vanadium, zinc, hafnium, tantalum and niobium or by using a tantalum base or by the addition to the electrolyte of soluble salts of at least one metal of groups IIA, IIIA, IVA, VA, VB, VIIB and VIIIB of the Periodic Table in amounts up to 1% by weight or by the addition to the electrolyte of sulfate and/or nitrate ions in a range of 10 to 10 g/l.
REFERENCES:
patent: 511682 (1893-12-01), Chalandre
patent: 3809630 (1974-05-01), De Nora et al.
"Chem. Comp. of Sea Water," Handbook of Chem. & Physics, 32 ed., 1950, p. 2806.
De Nora Vittorio
Nidola Antonio
Spaziante Placido M.
Andrews R. L.
Diamond Shamrock Technologies S.A.
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