Patent US4002729 - Method for thermochemical decomposition of water - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsWater is thermochemically decomposed to produce hydrogen by the following sequence of reactions: KI, NH3, CO.sub. 2 and water in an organic solvent such as ethyl or propyl alcohol are reacted to produce KHCO 3 and NH4 I. The