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

C - Chemistry, Metallurgy

25

B

204/78.3

C25B 1/02 (2006.01) C25B 1/10 (2006.01) C25B 1/22 (2006.01)

Patent

CA 1247038

PROCESS FOR OBTAINING HYDROGEN AND OXYGEN FROM WATER 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. A hydrogen iodide-containing phase is separated and removed from the cathodic chamber and is thermally decomposed into hydrogen and iodine is a second stage. The iodine is recycled to the cathodic chamber and the hydrogen is recovered as a product.

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