US4567205A
Expired / Lapsed
US
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Ruthenium catalysts, and use thereof for Fischer-Tropsch synthesis
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1985-05-20
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Granted: 1986-01-28
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Expires: 2005-05-20
Abstract
Abstract A novel ruthenium catalyst, notably a ruthenium-titania catalyst, is disclosed to which is added sufficient rhenium to obtain, at corresponding process conditions, improved activity maintenance in the production of hydrocarbons via carbon monoxide-hydrogen synthesis reactions vis-a-vis a catalyst composition otherwise similar except that it does not contain rhenium. High quality middle distillate fuels, characterized generally as admixtures of linear paraffins and olefins, are formed in a process wherein a feed mixture of carbon monoxide and hydrogen are contacted at reaction conditions over such catalyst.
Inventors
- 👤 Kym B. Arcuri
- 👤 Charles H. Mauldin
- 👤 Dave H. Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:33
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; B01J21/00; B01J21/06; B01J21/063; C07C2521/00; C07C2521/06; C07C2523/00; C07C2523/16; C07C2523/32; C07C2523/36; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/54; C07C2523/56; C07C2523/64; C07C2523/656
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
94 words
A process useful for the synthesis of hydrocarbons at reaction conditions from a feed constituting an admixture of carbon monoxide and hydrogen, which comprises contacting said feed with a catalyst which comprises ruthenium in catalytically active amount composited with titania, or titania-containing support, having a rutile:anatase ratio of at least about 2:3 and rhenium in amount sufficient to provide a weight ratio of rhenium:ruthenium which ranges from about 2:1 to about 1:4,sufficient at corresponding reaction conditions to obtain improved activity maintenance vis-a-vis a ruthenium catalyst otherwise similar except that it does not contain rhenium.
Claim 2
Dependent Claim
94 words
A process useful for the synthesis of hydrocarbons at reaction conditions from a feed constituting an admixture of carbon monoxide and hydrogen, which comprises contacting said feed with a catalyst which comprises ruthenium in catalytically active amount composited with titania, or titania-containing support, having a rutile:anatase ratio of at least about 2:3 and rhenium in amount sufficient to provide a weight ratio of rhenium:ruthenium which ranges from about 2:1 to about 1:4,sufficient at corresponding reaction conditions to obtain improved activity maintenance vis-a-vis a ruthenium catalyst otherwise similar except that it does not contain rhenium.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein the catalyst contains from about 0.01 percent to about 8 percent ruthenium, based on the weight of the catalyst composition.
Claim 4
Dependent Claim
25 words
The process of claim 1 wherein the catalyst contains from about 0.2 to about 4 percent ruthenium, based on the weight of the catalyst composition.
Claim 5
Dependent Claim
25 words
The process of claim 1 wherein the catalyst contains from about 0.01 to about 8 percent rhenium, based on the weight of the catalyst composition.
Claim 6
Dependent Claim
25 words
The process of claim 1 wherein the catalyst contains from about 0.1 to about 4 percent rhenium, based on the weight of the catalyst composition.
Claim 7
Dependent Claim
44 words
The process of claim 1 wherein the reaction conditions are defined within ranges as follows: ______________________________________
H.sub.2 :CO mole ratio
about 0.1:1 to 10:1
Space Velocities hr.sup.-1
about 100 to 20,000
Temperatures, °C.
about 150 to 500
Pressure, kP.sub.a about 100 to 10.sup.5.
______________________________________
Claim 8
Dependent Claim
44 words
The process of claim 1 wherein the reaction conditions are defined within ranges as follows: ______________________________________
H.sub.2 :CO mole ratio
about 0.5:1 to 4:1
Space Velocities, hr.sup.-1
about 300 to 2000
Temperature, °C.
about 180 to 300
Pressure, kP.sub.a about 100 to 3100.
______________________________________
Claim 9
Dependent Claim
23 words
The process of claim 1 wherein the rutile:anatase ratio of the titania of the catalyst support ranges from about 2:3 to about 100:1.
Claim 10
Dependent Claim
25 words
The process of claim 1 wherein the rutile:anatase ratio of the titania of the catalyst support ranges from about 3:2 to about 100:1, and greater.
Claim 11
Dependent Claim
44 words
The process of claim 1 wherein the rutile:anatase ratio of the titania of the catalyst support ranges from about 2:3 to about 100:1, and the catalyst contains from about 0.01 percent to about 8 percent ruthenium, based on the weight of the catalyst composition.
Claim 12
Dependent Claim
18 words
The process of claim 10 wherein the catalyst contains from about 0.2 percent to about 4 percent ruthenium.
Claim 13
Dependent Claim
36 words
The process of claim 1 wherein the rutile:anatase ratio of the titania of the catalyst support ranges from about 2:3 to about 100:1, and the catalyst contains from about 0.01 percent to about 8 percent rhenium.
Claim 14
Dependent Claim
17 words
The process of claim 12 wherein the catalyst contains from about 0.1 to about 4 percent rhenium.
Claim 15
Dependent Claim
53 words
The process of claim 1 wherein the rutile:anatase ratio of the titania of the catalyst support ranges from about 2:3 to about 100:1, the catalyst contains from about 0.01 percent to about 8 percent ruthenium, and from about 0.01 percent to about 8 percent rhenium, based on the weight of the catalyst composition.
Claim 16
Dependent Claim
26 words
The process of claim 14 wherein the catalyst contains from about 0.2 to about 4 percent ruthenium, and from about 0.1 to about 4 percent rhenium.
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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) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |