Device for hydrogen separation and method
AssigneeLos Alamos National Security, LLC
InventorsStephen N. Paglieri, Iver E. Anderson, Robert L. Terpstra
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Abstract
A device for hydrogen separation has a porous support and hydrogen separation material on the support. The support is prepared by heat treatment of metal microparticles, preferably of iron-based or nickel-based alloys that also include aluminum and/or yttrium. The hydrogen separation material is then deposited on the support. Preferred hydrogen separation materials include metals such as palladium, alloys, platinum, refractory metals, and alloys.
Claims18
A device for separating hydrogen from other materials, comprising:
- a porous substrate of metal microparticles of an alloy of chromium, aluminum, and iron, the metal microparticles being coated with an outer atomic diffusion barrier layer comprising aluminum oxide that is substantially incapable of hydrogen reduction the porous substrate prepared by sintering said metal microparticles until said outer atomic diffusion barrier layer forms on the surface of the microparticles;
- and
- hydrogen separation material on the diffusion barrier layer of the support structure.
A method for making a device for separating hydrogen from a gaseous mixture, comprising:
- forming a porous support structure from microparticles of an alloy of chromium, aluminum, and iron, said porous support being formed by sintering the microparticles until an outer diffusion barrier layer comprising aluminum oxide that is substantially incapable of hydrogen reduction forms on the alloy microparticles;
- and
- depositing hydrogen separation material on the diffusion barrier layer of the support structure.
A method for separating hydrogen, comprising:
- forming a porous support structure by sintering metal microparticles of an alloy of chromium, aluminum, and iron wherein the sintering results in an outer diffusion barrier layer comprising aluminum oxide on the microparticles that is substantially incapable of hydrogen reduction;
- depositing hydrogen separating material on the diffusion barrier layer, thereby forming a device for separating hydrogen;
- and
- using the device to separate hydrogen.
Dependencies are inferred from the claim text.