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Hydrogen transport membranes

Patent ·
OSTI ID:1175366
Composite hydrogen transport membranes, which are used for extraction of hydrogen from gas mixtures are provided. Methods are described for supporting metals and metal alloys which have high hydrogen permeability, but which are either too thin to be self supporting, too weak to resist differential pressures across the membrane, or which become embrittled by hydrogen. Support materials are chosen to be lattice matched to the metals and metal alloys. Preferred metals with high permeability for hydrogen include vanadium, niobium, tantalum, zirconium, palladium, and alloys thereof. Hydrogen-permeable membranes include those in which the pores of a porous support matrix are blocked by hydrogen-permeable metals and metal alloys, those in which the pores of a porous metal matrix are blocked with materials which make the membrane impervious to gases other than hydrogen, and cermets fabricated by sintering powders of metals with powders of lattice-matched ceramic.
Research Organization:
Eltron Research, Inc., Boulder, CO (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-00NT40762
Assignee:
Eltron Research, Inc. (Boulder, CO)
Patent Number(s):
6,899,744
Application Number:
10/382,354
OSTI ID:
1175366
Country of Publication:
United States
Language:
English

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