Method of separating and selectively removing hydrogen contaminant from hydrogen-containing process streams and compositions useful therefor
OwnerDavid Richard Corbininventor
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Abstract
A method of separating and selectively removing hydrogen contaminant from hydrogen-containing product and by-product process streams is disclosed. Separation and removal occur when certain Cd containing zeolite, silica, alumina, carbon or clay compositions are placed in contact with a hydrogen-containing process stream. A hydrogen-encapsulated composition is formed by practice of the method. Also disclosed is a reversible storage method for hydrogen using the above-described compositions.
Claims17
A method of separating and removing hydrogen from a hydrogen-containing process stream comprising the steps of:
- a) contacting a hydrogen-containing process stream with a Cd containing zeolite, silica, alumina, carbon or clay composition, with the proviso that said zeolite is not rho zeolite,
- b) selectively encapsulating the hydrogen to form a hydrogen-encapsulated composition;
- and
- c) releasing the hydrogen from the hydrogen-encapsulated composition by heating the composition and/or by reducing the surrounding pressure of the composition.
A method for the reversible storage of hydrogen comprising the steps of:
- a) contacting a hydrogen-containing process stream with a composition which comprises cadmium and a support selected from the group consisting of zeolite, silica, alumina, carbon, clay, and combinations thereof wherein said zeolite is not rho zeolite whereby a hydrogen-encapsulated composition is produced;
- and
- b) releasing hydrogen from the hydrogen-encapsulated composition by heating the composition and/or by reducing the surrounding pressure of the composition.
A composition comprising cadmium and a support selected from the group consisting of zeolite, silica, alumina, carbon, clay, and combinations thereof wherein said composition has hydrogen encapsulated therein and said zeolite is not rho zeolite.
Dependencies are inferred from the claim text.