Patent US4018672A successfully refreshed from Google Patents.
US4018672A
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Hydrodesulfurization catalyst and process utilizing the same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1975-12-11
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Granted: 1977-04-19
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Expires: 1995-12-11
Abstract
Abstract A catalyst is provided which comprises a hydrogenation component composited with an alumina support prepared by hydrolyzing an aluminum alcoholate to aluminum hydroxide and thermally decomposing the aluminum hydroxide in a solvent at a temperature above the critical temperature of the solvent. A preferred catalyst is cobalt-molybdenum on alumina. Also provided is a hydrodesulfurization process utilizing said catalyst.
Inventors
- 👤 William R. Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:36
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
147 words
In a process for the hydrodesulfurization of a sulfur-containing hydrocarbon oil which comprises contacting said oil under hydrodesulfurization conditions with hydrogen and a catalyst comprising an alumina support composited with a hydrogenation component, said hydrogenation component being selected from the group consisting of at least one elemental metal, metal oxide and metal sulfide of a Group VIB element of the Periodic Table of Elements and at least one elemental metal, metal oxide and metal sulfide of a Group VIII element of the Periodic Table of Elements, the improvement which comprises said alumina having been prepared by hydrolyzing an aluminum alcoholate to aluminum hydroxide, and thermally decomposing said aluminum hydroxide in a solvent selected from the group consisting of C1 to C4 alcohols, acetone, methyethylketone, cyclic ethers and tetrahydrofuran, at a temperature ranging from above the critical temperature of said solvent to a temperature of about 980° C.
Claim 2
Dependent Claim
147 words
In a process for the hydrodesulfurization of a sulfur-containing hydrocarbon oil which comprises contacting said oil under hydrodesulfurization conditions with hydrogen and a catalyst comprising an alumina support composited with a hydrogenation component, said hydrogenation component being selected from the group consisting of at least one elemental metal, metal oxide and metal sulfide of a Group VIB element of the Periodic Table of Elements and at least one elemental metal, metal oxide and metal sulfide of a Group VIII element of the Periodic Table of Elements, the improvement which comprises said alumina having been prepared by hydrolyzing an aluminum alcoholate to aluminum hydroxide, and thermally decomposing said aluminum hydroxide in a solvent selected from the group consisting of C1 to C4 alcohols, acetone, methyethylketone, cyclic ethers and tetrahydrofuran, at a temperature ranging from above the critical temperature of said solvent to a temperature of about 980° C.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein said aluminum alcoholate is an aluminum butylate.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein said thermal decomposition is conducted at a temperature ranging from about 700° to about 980° C.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein said solvent is methanol.
Claim 6
Dependent Claim
33 words
The process of claim 1 wherein said hydrode-sulfurization conditions include a temperature ranging from about 100° to about 750° C., and a hydrogen partial pressure ranging from about atmospheric to about 10,000 psig.
Claim 7
Dependent Claim
33 words
The process of claim 1 wherein said hydrodesulfurization conditions include a temperature ranging from about 300° to about 500° C. and a hydrogen partial pressure ranging from about 30 to about 1000 psig.
Claim 8
Dependent Claim
53 words
The process of claim 1 wherein said Group VIB metal component is selected from the group consisting of molybdenum oxide, molybdenum sulfide, tungsten oxide, tungsten sulfide and mixtures thereof and said Group VIII metal component is selected from the group consisting of nickel oxide, cobalt oxide, nickel sulfide, cobalt sulfide and mixtures thereof.
Claim 9
Dependent Claim
12 words
The process of claim 1 wherein said support consists essentially of alumina.
Claim 10
Dependent Claim
58 words
The process of claim 1 wherein said catalyst comprises from about 1 to about 10 weight percent of a Group VIB metal component calculated as the elemental metal based on the total catalyst and from about 1 to about 5 weight percent of a Group VIII metal component calculated as the elemental metal based on the total catalyst.
Claim 11
Dependent Claim
53 words
The process of claim 1 wherein said catalyst comprises from about 5 to about 10 weight percent Group VIB metal component calculated as the metal based on the total catalyst and from about 1 to about 3 weight percent Group VIII metal component calculated as the elemental metal based on the total catalyst.
Claim 12
Dependent Claim
20 words
The process of claim 1 wherein said catalyst comprises about 8 weight percent molybdenum and about 2.3 weight percent cobalt.
References Cited (Backward Citations)
US3900430A
Cited
US3933685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |