Method for thermochemical decomposition of water. [KI cycle]
Patent
·
OSTI ID:7105812
Water is thermochemically decomposed to produce hydrogen by the following sequence of reactions: KI, NH/sub 3/, CO/sub 2/ and water in an organic solvent such as ethyl or propyl alcohol are reacted to produce KHCO/sub 3/ and NH/sub 4/I. The KHCO/sub 3/ is thermally decomposed to K/sub 2/CO/sub 3/, H/sub 2/O and CO/sub 2/, while the NH/sub 4/I is reacted with Hg to produce HgI/sub 2/, NH/sub 3/ and H/sub 2/. The K/sub 2/CO/sub 3/ obtained by calcining KHCO/sub 3/ is then reacted with Hgl/sub 2/ to produce Hg, KI, CO and O/sub 2/. All products of the reaction are recycled except hydrogen and oxygen.
- Assignee:
- Energy Research and Development Administration
- Patent Number(s):
- US 4002729
- OSTI ID:
- 7105812
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
08 HYDROGEN
080102* -- Hydrogen-- Production-- Thermochemical Processes
ALKALI METAL COMPOUNDS
AMMONIA
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
HALIDES
HALOGEN COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOSPHORS
POTASSIUM COMPOUNDS
POTASSIUM IODIDES
PRODUCTION
THERMOCHEMICAL PROCESSES
WATER
080102* -- Hydrogen-- Production-- Thermochemical Processes
ALKALI METAL COMPOUNDS
AMMONIA
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
HALIDES
HALOGEN COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOSPHORS
POTASSIUM COMPOUNDS
POTASSIUM IODIDES
PRODUCTION
THERMOCHEMICAL PROCESSES
WATER