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US 4,069,120 AGranted
Photo-electrolytic production of hydrogen
AssigneeUnited Technologies Corporation
InventorsRussell Gilbert Meyerand, Jr., Nicholas Leo Krascella, David Gue McMahon
Life of this patent
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Abstract
Hydrogen and oxygen are produced from water in a process involving the photodissociation of molecular bromine with radiant energy at wavelengths within the visible light region and a subsequent electrolytic dissociation of hydrogen halides.
Claims4
In the production of hydrogen from water, the improvement which comprises:
- forming a water/halogen gas mixture;
- irradiating the mixture with radiation energy in the visible spectrum to form the corresponding hydrogen halide;
- and
- electrolytically decomposing the hydrogen halide to produce hydrogen.
1 more element
In the production of hydrogen from water, the improvement which comprises:
- forming a water/bromine gas mixture;
- irradiating the mixture with radiation in the visible spectrum to form hydrogen bromide;
- separating the hydrogen bromide;
- forming a hydrogen bromide/iodine gas mixture;
- irradiating the hydrogen bromide/iodine gas mixture with radiation in the visible spectrum to form hydrogen iodide, and electrolytically decomposing the hydrogen iodide to form hydrogen.
2 more elements
Dependencies are inferred from the claim text.