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US4585798A
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Synthesis gas conversion using ruthenium-promoted cobalt catalyst
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1984-07-30
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Granted: 1986-04-29
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Expires: 2004-07-30
Abstract
Abstract Synthesis gas comprising carbon monoxide and hydrogen is converted to a liquid hydrocarbon by contacting the synthesis gas under conversion conditions with a supported cobalt-ruthenium catalyst in which the cobalt to ruthenium molar ratio is greater than about 200:1. The catalyst is preferably prepared by using a non-aqueous impregnation solution and using an activation procedure involving reduction, oxidation and reduction.
Inventors
- 👤 Harold Beuther
- 👤 Thaddeus P. Kobylinski
- 👤 Charles L. Kibby
- 👤 Richard B. Pannell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:17
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/0445; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/75; B01J23/89; B01J23/8933; B01J23/894; B01J37/00; B01J37/12; B01J37/14; B01J37/16; B01J37/18; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/10; C07C2523/12; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/70; C07C2523/74; C07C2523/75
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
84 words
A process for the conversion of synthesis gas to a product containing liquid hydrocarbons, which comprises contacting a synthesis gas comprising hydrogen and carbon monoxide with an alumina supported cobalt-ruthenium catalyst containing from about 5 to about 30 weight percent cobalt and having a molar ratio of cobalt to ruthenium greater than about 200:1 and up to about 3400:1 under synthesis conversion conditions, said catalyst being prepared by contacting alumina with a non-aqueous, organic impregnation solution of a cobalt salt and a ruthenium salt.
Claim 2
Dependent Claim
84 words
A process for the conversion of synthesis gas to a product containing liquid hydrocarbons, which comprises contacting a synthesis gas comprising hydrogen and carbon monoxide with an alumina supported cobalt-ruthenium catalyst containing from about 5 to about 30 weight percent cobalt and having a molar ratio of cobalt to ruthenium greater than about 200:1 and up to about 3400:1 under synthesis conversion conditions, said catalyst being prepared by contacting alumina with a non-aqueous, organic impregnation solution of a cobalt salt and a ruthenium salt.
Claim 3
Dependent Claim
23 words
The process of claim 1 wherein the molar ratio of cobalt to ruthenium in the catalyst is from about 250:1 to about 1000:1.
Claim 4
Dependent Claim
20 words
The process of claim 2 wherein the molar ratio of cobalt to ruthenium is from about 300:1 to about 700:1.
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein said conversion process is conducted under a total pressure of at least 3.4 atmospheres.
Claim 6
Dependent Claim
21 words
The process of claim 4 wherein said process is conducted under a pressure of from about 13 to about 20 atmospheres.
Claim 7
Dependent Claim
40 words
The process of claim 1 wherein said catalyst additionally contains from about 0.1 to about 5 weight percent of a promoter metal oxide selected from the group consisting of lanthanum oxide, thoria, magnesia, and a mixture of rare earth oxides.
Claim 8
Dependent Claim
22 words
The process of claim 1 wherein said catalyst support comprises extruded alumina, wherein said alumina is gamma-alumina, eta-alumina or a mixture thereof.
Claim 9
Dependent Claim
28 words
The process of claim 1 wherein said catalyst is prepared by contacting extruded alumina with a non-aqueous, organic impregnation solution of a cobalt salt and a ruthenium salt.
Claim 10
Dependent Claim
18 words
The process of claim 8 wherein impregnation of the non-aqueous solution is conducted using the incipient wetness technique.
Claim 11
Dependent Claim
30 words
The process of claim 8 wherein said impregnated catalyst is subjected to an activation procedure comprising, in sequence, reduction in a hydrogen atmosphere, oxidation, and reduction in a hydrogen atmosphere.
Claim 12
Dependent Claim
19 words
The process of claim 10 wherein each of said reductions and oxidation are conducted while slowly heating the catalyst.
Claim 13
Dependent Claim
12 words
The process of claim 6 wherein said metal oxide is lanthanum oxide.
Claim 14
Dependent Claim
11 words
The process of claim 6 wherein said metal oxide is thoria.
Claim 15
Dependent Claim
11 words
The process of claim 6 wherein said metal oxide is magnesia.
Claim 16
Dependent Claim
102 words
A process for the conversion of synthesis gas to a product containing liquid hydrocarbons, which comprises contacting a synthesis gas comprising hydrogen and carbon monoxide with an alumina supported cobalt-ruthenium catalyst containing from about 5 to about 30 weight percent cobalt and having a molar ratio of cobalt to ruthenium greater than about 250:1 and up to about 1000:1 under synthesis conversion conditions, said catalyst being prepared by contacting an alumina support with a non-aqueous, organic impregnation solution of a cobalt salt and a ruthenium salt, said aluminum support comprising extruded alumina in the form of gamma-alumina, eta-alumina or a mixture thereof.
Claim 17
Dependent Claim
102 words
A process for the conversion of synthesis gas to a product containing liquid hydrocarbons, which comprises contacting a synthesis gas comprising hydrogen and carbon monoxide with an alumina supported cobalt-ruthenium catalyst containing from about 5 to about 30 weight percent cobalt and having a molar ratio of cobalt to ruthenium greater than about 250:1 and up to about 1000:1 under synthesis conversion conditions, said catalyst being prepared by contacting an alumina support with a non-aqueous, organic impregnation solution of a cobalt salt and a ruthenium salt, said aluminum support comprising extruded alumina in the form of gamma-alumina, eta-alumina or a mixture thereof.
Claim 18
Dependent Claim
40 words
The process of claim 15 wherein said catalyst additionally contains from about 0.1 to about 5 weight percent of a promoter metal oxide selected from the group consisting of lanthanum oxide, thoria, magnesia, and a mixture of rare earth oxides.
Claim 19
Dependent Claim
13 words
The process of claim 16 wherein said promoter metal oxide is lanthanum oxide.
Claim 20
Dependent Claim
13 words
The process of claim 17 wherein said impregnation solution comprises acetone as solvent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |