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U.S. Department of Energy
Office of Scientific and Technical Information

Method for thermochemical decomposition of water

Patent ·
OSTI ID:862742
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 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 HgI.sub.2 to produce Hg, KI, CO and O.sub.2. All products of the reaction are recycled except hydrogen and oxygen.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Number(s):
US 4002729
OSTI ID:
862742
Country of Publication:
United States
Language:
English