US3985865A
Expired / Lapsed
US
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Method for the generation of hydrogen
Assignee: Siemens AG
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Filing: 1975-04-28
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Granted: 1976-10-12
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Expires: 1995-04-28
Abstract
Abstract The invention provides a method for the generation of hydrogen, particularly for the generation of hydrogen for fuel cells. The hydrogen is generated through reaction of magnesium or a magnesium-aluminum mixture with water in the presence of at least one cobalt oxide and at least one water-soluble chloride, there being additionally admixed to the reaction mixture a molybdenum compound, particularly a molybdenum oxide or a molybdenate.
Inventors
- 👤 Karl Hohne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:25
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/06; H01M8/0606; H01M8/065; C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/061; C01B3/08; C01B3/10; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36; Y02E60/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
In a method for generating gaseous hydrogen comprising reacting with water particles of magnesium or a combination of magnesium and aluminum, in a weight ratio of magnesium to aluminum of between about 7:1 to 2:6, said particles being admixed with an oxide of cobalt selected from the group consisting of tricobalt tetraoxide (CO 3 O 4 ) and dicobalt trioxide (CO 2 O 3 ), said reaction occuring in the presence of a water soluble chloride selected from the group consisting of alkali metal chlorides and magnesium chloride, wherein the amount of cobalt oxide is from about 0.5 to 5.0% by weight of total metal and the amount of water-soluble chloride is from about 5 to 200% by weight of total metal; the improvement which comprises conducting said reaction in the presence of a molybdenum compound selected from the group consisting of a molybdenum oxide or an inorganic molybdenum salt in an amount of from about 0.5 to 5% by weight based on the weight of the total metal.
Claim 2
Dependent Claim
169 words
In a method for generating gaseous hydrogen comprising reacting with water particles of magnesium or a combination of magnesium and aluminum, in a weight ratio of magnesium to aluminum of between about 7:1 to 2:6, said particles being admixed with an oxide of cobalt selected from the group consisting of tricobalt tetraoxide (CO 3 O 4 ) and dicobalt trioxide (CO 2 O 3 ), said reaction occuring in the presence of a water soluble chloride selected from the group consisting of alkali metal chlorides and magnesium chloride, wherein the amount of cobalt oxide is from about 0.5 to 5.0% by weight of total metal and the amount of water-soluble chloride is from about 5 to 200% by weight of total metal; the improvement which comprises conducting said reaction in the presence of a molybdenum compound selected from the group consisting of a molybdenum oxide or an inorganic molybdenum salt in an amount of from about 0.5 to 5% by weight based on the weight of the total metal.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said molybdenum oxide is MoO 3 .
Claim 4
Dependent Claim
21 words
The method of claim 1 wherein said molybdenate is Na 2 MoO 4 or (NH 4 ) 2 MoO 4 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |