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US4238371A
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Methanation catalyst
Assignee: Phillips Petroleum Co
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Filing: 1979-04-18
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Granted: 1980-12-09
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Expires: 1999-04-18
Abstract
Abstract A copper-molybdenum composition and process for using the composition in the production of methane from mixtures of carbon monoxide and hydrogen.
Inventors
- 👤 Jack N. Finch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:14
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/885; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/0445; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/70; C07C2523/76; C07C2523/84; C07C2523/85; C07C2523/88; C07C2523/885
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
109 words
A methanation catalyst produced by impregnating a catalyst support with a solution of at least one oxidizable molybdenum compound, oxidizing the thus impregnated catalyst support to oxidize said at least one molybdenum compound, then impregnating the molybdenum oxide-containing support with a solution of at least one oxidizable copper compound and oxidizing the thus impregnated support to oxidize the said at least one copper compound, and then subjecting the resulting oxide composition to sufficient reduction to result in a catalyst having methanation activity, wherein said molybdenum and copper compounds are employed in such amounts that the atomic ratio of copper to molybdenum is in the range of 0.1/1 to 10/1.
Claim 2
Dependent Claim
109 words
A methanation catalyst produced by impregnating a catalyst support with a solution of at least one oxidizable molybdenum compound, oxidizing the thus impregnated catalyst support to oxidize said at least one molybdenum compound, then impregnating the molybdenum oxide-containing support with a solution of at least one oxidizable copper compound and oxidizing the thus impregnated support to oxidize the said at least one copper compound, and then subjecting the resulting oxide composition to sufficient reduction to result in a catalyst having methanation activity, wherein said molybdenum and copper compounds are employed in such amounts that the atomic ratio of copper to molybdenum is in the range of 0.1/1 to 10/1.
Claim 3
Dependent Claim
63 words
A methanation catalyst according to claim 1 wherein said catalyst support is impregnated with aqueous solution of ammonium heptamolybdate, then the thus impregnated support is calcined to convert the ammonium heptamolybdate to molybdenum oxide, then the molybdenum oxide-containing support is impregnated with aqueous solution of cupric nitrate, and then the thus impregnated support is calcined to oxidize the cupric nitrate to copper oxide.
Claim 4
Dependent Claim
29 words
A methanation catalyst according to claim 2 wherein said catalyst support is selected from the group consisting of alumina, graphite, calcium titanate, zirconia, pumice, silicon carbide, silica, and silica-alumina.
Claim 5
Dependent Claim
13 words
A methanation catalyst according to claim 2 wherein said catalyst support is alumina.
Claim 6
Dependent Claim
23 words
A methanation catalyst according to claim 4 wherein the atomic ratio of copper to molybdenum is in the range of 1/1 to 5/1.
Claim 7
Dependent Claim
18 words
A methanation catalyst according to claim 4 wherein the atomic ratio of copper to molybdenum is about 2/1.
Claim 8
Dependent Claim
17 words
A methanation catalyst according to claim 4 wherein the molybdenum oxide-containing alumina contains 11 percent molybdenum oxide.
Claim 9
Dependent Claim
36 words
A methanation catalyst according to claim 7 wherein said cupric nitrate is employed in such an amount that the amount of copper therein equals about 5 weight percent of the weight of the molybdenum oxide-containing alumina.
Claim 10
Dependent Claim
36 words
A methanation catalyst according to claim 7 wherein said cupric nitrate is employed in such an amount that the amount of copper therein equals about 10 weight percent of the weight of the molybdenum oxide-containing alumina.
Claim 11
Dependent Claim
36 words
A methanation catalyst according to claim 7 wherein said cupric nitrate is employed in such an amount that the amount of copper therein equals about 24 weight percent of the weight of the molybdenum oxide-containing alumina.
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) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |