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US 7,001,586 B2Granted
CO-free hydrogen from decomposition of methane
AssigneeCatalytic Materials, LLC
InventorsHaiyou Wang, R. Terry K. Baker
Life of this patent
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Abstract
The generation of CO-free hydrogen from methane, with use of catalyst compositions represented by NixMgyO and NixMgyCuzO.
Claims13
A method for decomposing methane to hydrogen and carbon and substantially no carbon oxides, which method comprises contacting, at a temperature from about 425° C. to about 625° C., methane with a catalyst represented by the formula:
- NixMgyO,
- NixMgyO, wherein x and y reflect the mole content of Ni to Mg respectively, and wherein the molar ratio of Ni to Mg is from about 1 to 1 to about 6.2 to 1, and the percentage of Ni in the metallic state is from about 15% and up to about 95%, and the percentage of Ni, of the metallic Ni, in the active state is greater than about 25%.
A method for decomposing methane to hydrogen and carbon and substantially no carbon oxides, which method comprises contacting, at a temperature from about 500° C. to about 800° C., methane with a catalyst represented by the formula:
- NixMgyCuzO, wherein x, y, and z represent the mole content of Ni, Mg, and Cu respectively;
- the molar ratio of Ni to Cu is about 19 to 1 to about 1 to 1;
- the molar ratio of Ni to Mg of about 1.0 to 1 to about 6.2 to 1;
- and
- the percentage of Ni and Cu in the metallic state is from about 15% to 95%, and the percentage of Ni, of the metallic sites, in the active state is greater than about 25%.
2 more elements
Dependencies are inferred from the claim text.