Hydrogen production

Details Hydrogen production Hydrogen production

1981-08-17

1984-12-25

Straub, Gary P.

Chemistry of inorganic compounds

Hydrogen or compound thereof

Elemental hydrogen

422222, 422240, 422241, 423648R, C01B 1300

Patent

active

044903499

ABSTRACT:
Method and apparatus for deriving hydrogen from superheated steam. Superheated steam is passed into chamber between opposing chamber walls. One of chamber walls is formed of a reactant such as iron which reacts exothermally with the superheated steam to liberate free hydrogen and to produce an oxidized compound such as ferric oxide. The other chamber wall is formed as a thin diffusion membrane permeable to hydrogen but relatively impermeable to steam and oxygen and hydrogen is extracted from the chamber by diffusion therethrough. The membrane is preferably made of palladium or a palladium-silver alloy to further decompose the superheated steam and enhance extraction of hydrogen. The reactant wall is heated at its side remote from the chamber in a reducing atmosphere to cause dissociation of the oxidized compound and removal of oxygen so as continuously to regenerate the reactant.

REFERENCES:
patent: 3928550 (1975-12-01), Seitzer
patent: 4053576 (1977-10-01), Fletcher
patent: 4310503 (1982-01-01), Erickson
patent: 4332775 (1982-06-01), Genequand et al.
patent: 4371500 (1983-02-01), Papineau

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