Patent US4567156A successfully refreshed from Google Patents.
US4567156A
Expired / Lapsed
US
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Oil soluble chromium catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1985-04-29
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Granted: 1986-01-28
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Expires: 2005-04-29
Abstract
Abstract A catalyst is prepared by adding a water soluble aliphatic polyhydroxy compound such as a polyhydroxy alcohol or a carbohydrate (e.g., sucrose) to an aqueous solution of chromic acid and subsequently introducing the resulting mixture into a hydrocarbon material. The hydrocarbon-containing mixture is heated in the presence of hydrogen sulfide to convert the chromium catalyst precursor to a solid chromimum-containing catalyst. Hydroconversion processes utilizing the catalyst to convert oil, coal, and mixtures thereof are also provided.
Inventors
- 👤 Roby Bearden, Jr.
- 👤 Clyde L. Aldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:17
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/08; C10G1/086; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C10G47/00; C10G47/02; C10G47/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
78 words
A catalyst prepared by the steps which comprise: (a) adding a water soluble aliphatic polyhydroxy compound to an aqueous solution of chromic acid (CrO 3 ); (b) forming a mixture of a hydrocarbon material and at least a portion of the mixture resulting from step (a); and (c) heating the mixture resulting from step (b) in the presence of a hydrogen sulfide-containing gas at conditions to produce a slurry comprising said hydrocarbon material and a solid chromium-containing catalyst.
Claim 2
Dependent Claim
78 words
A catalyst prepared by the steps which comprise: (a) adding a water soluble aliphatic polyhydroxy compound to an aqueous solution of chromic acid (CrO 3 ); (b) forming a mixture of a hydrocarbon material and at least a portion of the mixture resulting from step (a); and (c) heating the mixture resulting from step (b) in the presence of a hydrogen sulfide-containing gas at conditions to produce a slurry comprising said hydrocarbon material and a solid chromium-containing catalyst.
Claim 3
Dependent Claim
23 words
The catalyst of claim 1 wherein said aliphatic polyhydroxy compound is selected from the group consisting of polyhydroxy alcohols, carbohydrates, and mixtures thereof.
Claim 4
Dependent Claim
25 words
The catalyst of claim 2 wherein said aliphatic polyhydroxy compound is selected from the group consisting of sucrose, partially hydrolyzed cellulose, glycerol, and mixtures thereof.
Claim 5
Dependent Claim
32 words
The catalyst of claim 1 wherein said aliphatic polyhydroxy compound is added to step (a) in an amount ranging from about 0.1 to 10 moles per mole chromic acid (CrO 3 ).
Claim 6
Dependent Claim
34 words
The catalyst of claim 1 wherein said conditions of step (c) include a temperature ranging from about 500° to about 1000° F. and a total pressure ranging from about 50 to about 5000 psig.
Claim 7
Dependent Claim
13 words
The catalyst of claim 1 wherein said hydrogen sulfide-containing gas also comprises hydrogen.
Claim 8
Dependent Claim
15 words
The catalyst of claim 1 wherein said hydrocarbon material comprises constituents boiling above 1050° F.
Claim 9
Dependent Claim
29 words
The catalyst of claim 1 wherein said mixture of step (b) comprises from about 0.001 to 2 weight percent chromium, calculated as elemental chromium, based on said hydrocarbon material.
Claim 10
Dependent Claim
27 words
The catalyst of claim 1 wherein said mixture of step (b) comprises from about 0.05 to 2 weight percent chromium, said mixture being a catalyst precursor concentrate.
Claim 11
Dependent Claim
15 words
The catalyst of claim 1 wherein said solid chromium-containing catalyst is recovered from said slurry.
Claim 12
Dependent Claim
20 words
The catalyst of claim 1 wherein said hydrogen sulfide-containing gas comprises from 1 to 100 mole percent H 2 S.
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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 |