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US 10,556,803 B2Granted
Ammonia synthesis using a catalytic nitrogen-selective membrane
AssigneeColorado School of Mines
InventorsJennifer Wilcox, Simona Liguori
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Abstract
The invention relates to a metallic membrane for nitrogen separation, the method of making the membrane and methods of using the membrane. The invention also relates to a metallic membrane for disassociation of nitrogen and subsequent reaction with hydrogen to produce ammonia at moderate conditions compared to a conventional Haber-Bosch process.
Claims17
A method of producing a nitrogen-hydrogen compound, comprising:
- providing a metallic membrane, wherein the metallic membrane is an alloy comprising a Group V element;
- providing a nitrogen (N2) stream to a first side of the metallic membrane;
- dissociating the N2 into atomic nitrogen (N) with the metallic membrane;
- reacting the dissociated nitrogen with a hydrogen gas on a second side of the metallic membrane;
- forming at least one nitrogen-hydrogen compound, wherein the nitrogen-hydrogen compound is selected from the group consisting of NH, NH2, NH3, and combinations thereof;
- desorbing the nitrogen-hydrogen compound from the metallic membrane;
- and
- reacting the nitrogen-hydrogen compound with hydrogen to form an ammonium cation at a temperature between about 200° C. and about 1000° C.
5 more elements
Dependencies are inferred from the claim text.