US4717702A
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US
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Catalyst for conversion of synthesis gas to diesel fuel and process for preparation of such catalyst
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1986-06-20
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Granted: 1988-01-05
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Expires: 2006-06-20
Abstract
Abstract A catalyst for the conversion of synthesis gas comprising cobalt on a high surface area, high purity, low acidity alumina support of gamma-alumina, eta-alumina or mixtures thereof, whereby the catalyst is prepared by (A) impregnation of the alumina support with a non-aqueous, organic solvent impregnation solution of cobalt nitrate containing sufficient amounts of a Group IIIB or IVB metal salt to provide said catalyst with from about 0.05 to about 100 parts by weight of a Group IIIB or IVB metal oxide per 100 parts by weight cobalt, (B) reduction of the impregnated alumina support by heating, in the presence of hydrogen, at a heating rate of from about 0.5 DEG to about 5 DEG C. per minute to a maximum temperature in the range of 180 DEG to about 220 DEG C. for a hold time of 6 to about 24 hours and thereafter heating the impregnated alumina support in the presence of hydrogen while heating up to a maximum hold temperature of from about 250 DEG to about 400 DEG C. for a hold time of 6 to about 65 hours.
Inventors
- 👤 Harold Beuther
- 👤 Charles L. Kibby
- 👤 Thaddeus P. Kobylinski
- 👤 Richard B. Pannell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
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; B01J23/76; B01J23/83; B01J35/00; B01J35/40; B01J35/30; B01J35/391; B01J35/392; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2523/00; C07C2523/10; C07C2523/12; C07C2523/70; C07C2523/74; C07C2523/75
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
213 words
A catalyst for the conversion of synthesis gas consisting essentially of cobalt and a Group IIIB or IVB metal oxide on a high surface area, high purity, low acidity alumina support of gamma-alumina, eta-alumina or mixtures thereof, said catalyst having a hydrogen chemisorption value of about 100 to about 300 micromol of hydrogen per gram of total catalyst when measure at 25° C. said catalyst having been prepared by (A) impregnation of said alumina support with a non-aqueous, organic solvent impregnation solution of cobalt nitrate containing sufficient amounts of a Group IIIB or IVB metal salt to provide said catalyst with from about 0.05 to about 100 parts by weight of a Group IIIB or IVB metal oxide per 100 parts by weight cobalt, (B) reduction of said impregnated alumina support by heating, in the presence of hydrogen, at a heating rate of from about 0.5° to about 5° C. per minute to a maximum temperature in the range of 180° to about 220° C. for a hold time of 6 to about 24 hours and thereafter heating said impregnated alumina support in the presence of hydrogen while heating up to a maximum hold temperature of from about 250° to about 400° C. for a hold time of 6 to about 65 hours.
Claim 2
Dependent Claim
213 words
A catalyst for the conversion of synthesis gas consisting essentially of cobalt and a Group IIIB or IVB metal oxide on a high surface area, high purity, low acidity alumina support of gamma-alumina, eta-alumina or mixtures thereof, said catalyst having a hydrogen chemisorption value of about 100 to about 300 micromol of hydrogen per gram of total catalyst when measure at 25° C. said catalyst having been prepared by (A) impregnation of said alumina support with a non-aqueous, organic solvent impregnation solution of cobalt nitrate containing sufficient amounts of a Group IIIB or IVB metal salt to provide said catalyst with from about 0.05 to about 100 parts by weight of a Group IIIB or IVB metal oxide per 100 parts by weight cobalt, (B) reduction of said impregnated alumina support by heating, in the presence of hydrogen, at a heating rate of from about 0.5° to about 5° C. per minute to a maximum temperature in the range of 180° to about 220° C. for a hold time of 6 to about 24 hours and thereafter heating said impregnated alumina support in the presence of hydrogen while heating up to a maximum hold temperature of from about 250° to about 400° C. for a hold time of 6 to about 65 hours.
Claim 3
Dependent Claim
30 words
The catalyst of claim 1 wherein said catalyst contains from about 1 to about 10 parts by weight Group IIIB or IVB metal oxide per 100 parts by weight cobalt.
Claim 4
Dependent Claim
19 words
The catalyst of claim 1 wherein said metal oxide is an oxide of an actinide, a lanthanide or zirconium.
Claim 5
Dependent Claim
11 words
The catalyst of claim 1 wherein said catalyst support is gamma-alumina.
Claim 6
Dependent Claim
26 words
The catalyst of claim 1 wherein said catalyst contains between about 0.05 and about 100 parts by weight thoria per 100 parts by weight of cobalt.
Claim 7
Dependent Claim
27 words
The catalyst of claim 1 wherein said catalyst contains between about 100 to about 2,000 parts by weight of alumina per 100 parts by weight of cobalt.
Claim 8
Dependent Claim
27 words
The catalyst of claim 6 wherein said catalyst contains from about 200 to about 400 parts by weight of alumina per 100 parts by weight of cobalt.
Claim 9
Dependent Claim
11 words
The catalyst of claim 3 wherein said metal oxide is lanthana.
Claim 10
Dependent Claim
196 words
A process for the preparation of a synthesis gas conversion catalyst which process comprises calcining a high purity, low acidity alumina in the presence of an oxygen-containing or inert gas at a temperature in the range of from about 300° to about 800° C., said alumina being gamma-alumina, eta-alumina or mixtures thereof, impregnating said calcined alumina while in a dehydrated state with a non-aqueous, organic solvent impegnation solution of cobalt nitrate containing sufficient amounts of a Group IIIB or IVB metal salt to provide said catalyst with from about 0.05 to about 100 parts by weight of a Group IIIB or IVB metal oxide per 100 parts by weight cobalt, reducing said impregnated alumina support by heating in the presence of hydrogen at a heating rate of from about 0.5° to about 5° C. per minute to a maximum temperature in the range of 180° to about 220° C. for a hold time of 6 to about 24 hours, and heating said impregnated alumina support in the presence of hydrogen while heating up to a maximum hold temperature of from about 250° to about 400° C. for a hold time of 6 to about 65 hours.
Claim 11
Dependent Claim
196 words
A process for the preparation of a synthesis gas conversion catalyst which process comprises calcining a high purity, low acidity alumina in the presence of an oxygen-containing or inert gas at a temperature in the range of from about 300° to about 800° C., said alumina being gamma-alumina, eta-alumina or mixtures thereof, impregnating said calcined alumina while in a dehydrated state with a non-aqueous, organic solvent impegnation solution of cobalt nitrate containing sufficient amounts of a Group IIIB or IVB metal salt to provide said catalyst with from about 0.05 to about 100 parts by weight of a Group IIIB or IVB metal oxide per 100 parts by weight cobalt, reducing said impregnated alumina support by heating in the presence of hydrogen at a heating rate of from about 0.5° to about 5° C. per minute to a maximum temperature in the range of 180° to about 220° C. for a hold time of 6 to about 24 hours, and heating said impregnated alumina support in the presence of hydrogen while heating up to a maximum hold temperature of from about 250° to about 400° C. for a hold time of 6 to about 65 hours.
Claim 12
Dependent Claim
13 words
The process of claim 9 wherein said metal salt is a thorium salt.
Claim 13
Dependent Claim
13 words
The process of claim 9 wherein said metal salt is a lanthanum salt.
Claim 14
Dependent Claim
16 words
The process of claim 9 wherein said solvent has a relative volatility of at least 0.1.
Claim 15
Dependent Claim
12 words
The process of claim 12 wherein said solvent is a lower alcohol.
Claim 16
Dependent Claim
10 words
The process of claim 13 wherein said alcohol is ethanol.
Claim 17
Dependent Claim
12 words
The process of claim 14 wherein said organic solvent additionally comprises acetone.
Claim 18
Dependent Claim
42 words
The process of claim 9 wherein said impregnated catalyst is subjected to at least one additional calcination step and followed by at least one additional impregnation step utilizing another portion of said nonaqueous, organic solvent impregnation solution prior to said reduction step.
Claim 19
Dependent Claim
25 words
The process of claim 16 wherein said further calcination is conducted at a temperature in the range of between about 150° to about 350° C.
Claim 20
Dependent Claim
33 words
The process of claim 9 wherein said reduction is conducted slowly by initially using a mixture of hydrogen and nitrogen and gradually decreasing the amount of nitrogen present until pure hydrogen is utilized.
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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) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |