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Title: Process for the thermochemical production of hydrogen

Hydrogen is thermochemically produced from water in a cycle wherein a first reaction produces hydrogen iodide and H.sub.2 SO.sub.4 by the reaction of iodine, sulfur dioxide and water under conditions which cause two distinct aqueous phases to be formed, i.e., a lighter sulfuric acid-bearing phase and a heavier hydrogen iodide-bearing phase. After separation of the two phases, the heavier phase containing most of the hydrogen iodide is treated, e.g., at a high temperature, to decompose the hydrogen iodide and recover hydrogen and iodine. The H.sub.2 SO.sub.4 is pyrolyzed to recover sulfur dioxide and produce oxygen.
 [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [2]
  1. (La Jolla, CA)
  2. (Del Mar, CA)
  3. (Cardiff, CA)
Publication Date:
OSTI Identifier:
Report Number(s):
US 4089940
DOE Contract Number:
Resource Type:
Research Org:
Country of Publication:
United States
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