Patent US3933883A successfully refreshed from Google Patents.
US3933883A
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Methanation catalyst and process of use
Assignee: WR Grace and Co
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Filing: 1975-04-14
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Granted: 1976-01-20
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Expires: 1995-04-14
Abstract
Abstract The methanation reaction, that is, the conversion of carbon monoxide and hydrogen to methane and a water byproduct is conducted at a temperature of 120 DEG to 500 DEG C and a pressure of 100 psig to 2000 psig in the presence of a catalyst consisting of nickel oxide and cobalt oxide in a nickel/cobalt ratio of 1 to 1.5 supported on a high purity alumina support consisting essentially of gamma alumina. The catalyst has a surface area of about 100 to 200 m2/g, an average pore diameter of 100 to 115A and a pore volume of 0.25 to 0.7 cc/g.
Inventors
- 👤 R. Parthasarathy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:03
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/60; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; B01J35/61; B01J35/615; B01J35/63; B01J35/633; B01J35/635; B01J35/64; B01J35/647; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/755
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
151 words
A method for converting a feed gas stream containing principally carbon monoxide, hydrogen and methane to a product gas stream containing essentially completely methane, comprising passing said feed gas stream in fluidized contact with a catalyst consisting of an alumina support having a purity of more than 99 percent by weight alumina, of which at least 70 percent by weight is present as gamma alumina and impregnated with nickel and cobalt in a nickel to cobalt atomic ratio of 1 to 1.5 and containing about 3 to 10 percent by weight metal values, said catalyst having a surface area of about 100 to 200 m 2 /g, pores in a pore diameter range of 35 to 200A, with an average pore diameter of 100 to 115A and a pore volume of 0.25 to 0.7 cc/g; at a pressure of 100 to 2,000 psig and at a temperature of 120° to 650°C.
Claim 2
Independent Claim
151 words
A method for converting a feed gas stream containing principally carbon monoxide, hydrogen and methane to a product gas stream containing essentially completely methane, comprising passing said feed gas stream in fluidized contact with a catalyst consisting of an alumina support having a purity of more than 99 percent by weight alumina, of which at least 70 percent by weight is present as gamma alumina and impregnated with nickel and cobalt in a nickel to cobalt atomic ratio of 1 to 1.5 and containing about 3 to 10 percent by weight metal values, said catalyst having a surface area of about 100 to 200 m 2 /g, pores in a pore diameter range of 35 to 200A, with an average pore diameter of 100 to 115A and a pore volume of 0.25 to 0.7 cc/g; at a pressure of 100 to 2,000 psig and at a temperature of 120° to 650°C.
Claim 3
Dependent Claim
21 words
A method as in claim 1 wherein the flow rate of said feed gas is 500 to 3000 hourly space velocity.
Claim 4
Dependent Claim
47 words
A method as in claim 1 wherein said catalyst has a nickel to cobalt atomic ratio of 1.10 to 1.30, a surface area of 125 to 175 m 2 /g, a pore diameter range of 50 to 180A and a pore volume of 0.3 to 0.55 cc/g.
Claim 5
Dependent Claim
18 words
A method as in claim 2 wherein said catalyst consists of spherical particles of 40 to 250 microns.
Claim 6
Dependent Claim
21 words
A method as in claim 4 wherein the flow rate of said feed gas is 500 to 3,000 hourly space velocity.
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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |