Process for obtaining hydrogen and oxygen from water

Details Process for obtaining hydrogen and oxygen from water Process for obtaining hydrogen and oxygen from water

1984-07-11

1985-10-01

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204129, 423488, 423507, 423644, C25B 122, C25B 124, C25B 102

Patent

active

045444595

ABSTRACT:
A process for obtaining hydrogen and oxygen from water in a two stage process including a first electrolysis stage performed in a two chamber cell wherein the chambers are separated by a membrane. Iodine is introduced into the cathodic chamber and hydrogen iodide is formed therein. Oxygen is formed in the anodic chamber and is removed as a product. The membrane conducts hydrogen ions and prevents the passage of the products HI and oxygen. In a second phase, hydrogen iodide is separated and removed from the cathodic chamber and is thermally decomposed into hydrogen and iodine. The iodine is recycled to the cathodic chamber and the hydrogen is recovered as a product.

REFERENCES:
patent: 4032415 (1977-06-01), Sanders
patent: 4053376 (1977-10-01), Carlin
patent: 4203813 (1980-05-01), Grantham
patent: 4304643 (1981-12-01), Diviser et al.
Biallas, et al., "The Methane-Methanol Hybrid Cycle", Proceedings of the World Hydrogen Energy Conference, California, USA, 13-17th Jun., 1982, vol. 2, pp. 579 et seq.
O'Keefe, et al., "Preliminary Results from Bench-Scale Testing of a Sulfur-Iodine Thermochemical Water-Splitting Cycle", Int. Journal of Hydrogen, vol. 7, No. 5, pp. 381 et seq.

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