Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing nonmetal element
Patent
1996-12-18
1998-06-23
Tung, T.
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing nonmetal element
205620, 205622, C25B 126
Patent
active
057700354
ABSTRACT:
The improved method for the production of chlorine from aqueous solutions of hydrochloric acid in a membrane electrolysis cell comprises a cathode compartment equipped with a gas diffusion cathode fed with air or enriched air or oxygen and an anodic compartment with an anode provided with an electrocatalytic coating for chlorine evolution. Said anode compartment is fed with an aqueous solution of hydrochloric acid having a maximum concentration of 20% and a maximum temperature of 60.degree. C., and containing an oxidizing compound having a redox potential of at least 0 Volts NHE and preferably 0.3-0.6 Volts NHE. A suitable oxidizing compound is trivalent iron in concentrations comprised in the range of 100-10,000 ppm. Both the anodic and cathodic compartment of the cell and their internal structures are made of titanium or alloys thereof, such as 0.2%. titanium-palladium. The parts made of titanium in which crevices may be present are provided with a protective coating based on metals of the platinum group, their oxides as such or as a mixture of the same.
REFERENCES:
patent: 2468766 (1949-05-01), Low
patent: 3711385 (1973-01-01), Beer
patent: 4191618 (1980-03-01), Coker et al.
Japio Abstract of Asahi Glass Co (JP 57194284), Nov. 29, 1982.
Caplus Abstract of Asahi Glass Co (JP 57194284), Nov. 29, 1982.
De Nora S.p.A.
Noguerola Alex
Tung T.
LandOfFree
Method for the electrolysis of aqueous solutions of hydrochloric does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the electrolysis of aqueous solutions of hydrochloric, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the electrolysis of aqueous solutions of hydrochloric will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1391548