Apparatus and method for extracting hydrogen
AssigneeTPC Technologies, Inc.
InventorLev A. Vaiman
Life of this patent
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Abstract
A membrane for extracting hydrogen from gaseous and gaseous-liquid mixtures at low temperature makes use of a palladium or palladium alloy substrate and permits reduction of the surface resistance of the substrate. The membrane includes combined coatings including vacuum-deposited palladium ions driven into the substrate with inert gas ions and an electrochemically applied catalyst coating in the form of palladium or palladium/platinum black. A method for fabricating the membrane and a method for using the membrane to separate ultra-pure hydrogen are also disclosed.
Claims16
A membrane comprising:
- A. a substrate consisting essentially of palladium metal and having opposed first and second sides;
- B. a first film consisting essentially of palladium metal applied in overlying relation to the first side of said substrate;
- C. a second film consisting essentially of a metal black selected from the group consisting of palladium black and palladium/platinum black overlying said first film;
- and
- D. a third film consisting essentially of a metal black selected from the group consisting of palladium black and palladium/platinum black overlying the second side of said substrate.
A method of fabricating a membrane, comprising the steps of:
- A. providing a substrate consisting essentially of palladium and having first and second sides;
- B. applying a first film of a material consisting essentially of palladium overlying the first side of said substrate;
- C. applying a second film consisting essentially of a metal black selected from the group consisting of palladium black and palladium/platinum black overlying the second side of said substrate;
- and
- D. applying a third film consisting essentially of a metal black selected from the group consisting of palladium black and palladium/platinum black overlying said first film.
Dependencies are inferred from the claim text.