Separating hydrogen from a mixture of substances

Details Separating hydrogen from a mixture of substances Separating hydrogen from a mixture of substances

B - Operations, Transporting

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B01D 53/22 (2006.01) B01D 59/12 (2006.01) B01D 69/12 (2006.01) B01D 71/02 (2006.01) C01B 3/50 (2006.01) C01B 4/00 (2006.01)

Patent

CA 1272140

ABSTRACT In separating hydrogen from a mixture of gases by diffusion through a non-porous membrane which is selectively permeable to hydrogen, the hydrogen being at least partially dissociated prior to being contacted with the membrane, the membrane comprises at least two layers of different materials. The layer on the upstream side of the membrane is less dissolving to hydrogen and has a lower release rate constant at 300°C than the layer on the downstream side. The membrane may consist of an iron diaphragm with a thin coating of copper on the upstream side.

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