Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Patent
1990-05-22
1993-06-15
Langel, Wayne
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
204128, 204129, 20415748, 2041575, 20415752, 204252, 429 19, 429 20, C01B 700, C25B 102, H01M 804, H01M 818
Patent
active
052196712
ABSTRACT:
Disclosed are an apparatus and method for the electrolytic, thermal, and photolytic production of hydrogen and oxygen. In the first step of the cycle a concentrated hydrohalic acid solution is electrolyzed to produce hydrogen, halogen, and dilute hydrohalic acid solution. In the second, or hydrogen halide formation and electrolyte reformation step, the halogen is reacted with steam in a gas phase thermal and photolytic process to reform the hydrogen halide and produce oxygen. An advantage of the novel reformation step is the ability to utilize a contaminated water feedstream for the production of the reusable hydrogen halide.
The present invention also provides both an apparatus and method for the radiation-augmented electrolytic and thermal production of hydrogen and oxygen. Reduction of electrical and thermal energy requirements is achieved by using radiation to: (i) activate photo-sensitive metallic hexahalide ions, which reduces the electrolysis electrode potential; and (ii) energize a portion of the hydrogen halide formation reaction. By utilizing radiation-augmented electrolysis, the conventional halogen oxidation reaction is replaced by oxidation of a metallic hexahalide, which occurs at a lower overvoltage and smaller reversible cell potential. Radiant energy thus both replaces electrical energy for the production of hydrogen, and increases the efficiency of electrical energy storage.
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patent: 4725341 (1988-02-01), Minz
B. Reichman et al. "Photoproduction of Halogens Using Platinized TiO.sub.2 ", NASA Tech Briefs, (Winter 1980), vol. 5, No. 4, pp. 449, 450.
Spaziante, P. M. et al.; Hydrogen/Halogen Energy Storage System: Safety, Performance, and Cost Assessment-Final Report, Feb. 1979; Brookhaven National Laboratory, Upton, New York 11973.
Gupta Avinash K.
Hanrahan Robert J.
Parker Robin Z.
Langel Wayne
Solar Reactor Technologies Inc.
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