US4256653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation and use of high surface area transition metal catalysts
Assignee: United States Department of the Interior
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Filing: 1977-05-27
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Granted: 1981-03-17
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Expires: 1997-05-27
Abstract
Abstract Highly active catalysts, suitable for use in hydrogenation and other reactions, are prepared from an alloy of one or more of the Group VIII transition metals with yttrium or a rare earth metal. The alloy is ground to the desired particle size and is thereafter reacted with a gas containing carbon monoxide and hydrogen to form an intimate physical admixture of the Group VIII metal or its corresponding carbide with the oxide of yttrium or the rare earth metal.
Inventors
- 👤 Gary B. Atkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:35
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/16; B01J23/00; B01J23/70; B01J23/76; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C2523/00; C07C2523/10; C07C2523/70; C07C2523/74; C07C2523/745; C07C2523/75; C07C2523/755; C07C2523/76; C07C2523/83
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
162 words
A method for production of methane comprising reacting carbon monoxide and hydrogen at a temperature of about 350° to 400° C. and a pressure of about 1 to 100 atmospheres in the presence of a catalyst prepared by (a) forming an alloy of a first metal selected from the group consisting of nickel, cobalt, iron and mixtures thereof with a second metal selected from the group consisting of yttrium, the rare earth metals and mixtures thereof, said first metal comprising from 5 to 95 weight percent of said alloy, (b) reacting said alloy with a gas comprising hydrogen and carbon monoxide at a temperature of about 300° to 600° C. for a time sufficient to substantially completely oxidize said second metal and (c) reacting the thus-formed catalytically active product with a gas comprising hydrogen and carbon monoxide at a temperature below about 250° C. and a pressure of about 5 to 10 atmospheres for a time sufficient to enhance its catalytic activity.
Claim 2
Independent Claim
162 words
A method for production of methane comprising reacting carbon monoxide and hydrogen at a temperature of about 350° to 400° C. and a pressure of about 1 to 100 atmospheres in the presence of a catalyst prepared by (a) forming an alloy of a first metal selected from the group consisting of nickel, cobalt, iron and mixtures thereof with a second metal selected from the group consisting of yttrium, the rare earth metals and mixtures thereof, said first metal comprising from 5 to 95 weight percent of said alloy, (b) reacting said alloy with a gas comprising hydrogen and carbon monoxide at a temperature of about 300° to 600° C. for a time sufficient to substantially completely oxidize said second metal and (c) reacting the thus-formed catalytically active product with a gas comprising hydrogen and carbon monoxide at a temperature below about 250° C. and a pressure of about 5 to 10 atmospheres for a time sufficient to enhance its catalytic activity.
Claim 3
Dependent Claim
12 words
The method of claim 1 in which said first metal is nickel.
Claim 4
Dependent Claim
12 words
The method of claim 1 in which said first metal is cobalt.
Claim 5
Independent Claim
11 words
The method ofclaim 1 in which said second metal is mischmetal.
Claim 6
Dependent Claim
12 words
The method of claim 1 in which said second metal is cerium.
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) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |