Patent US4080286A successfully refreshed from Google Patents.
US4080286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurization process employing a Group IV-B promoted catalyst
Assignee: Gulf Research and Development Co
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Filing: 1976-10-20
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Granted: 1978-03-21
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Expires: 1996-10-20
Abstract
Abstract An improved process for the hydrodesulfurization of hydrocarbons employing a catalyst comprising Group VI-B and Group VIII metals supported on a refractory oxide and promoted with a minor amount of titanium by contacting the refractory oxide with an aqueous solution of a titanium salt.
Inventors
- 👤 Stephen Joseph Yanik
- 👤 Angelo Anthony Montagna
- 👤 James Albert Frayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:42
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/0201; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
In a process for the hydrodesulfurization of a sulfur-containing hydrocarbon stock selected from the group consisting of naphtha and heavier hydrocarbons which comprises contacting the hydrocarbon stock under hydrodesulfurization conditions with a catalsyt substantially free of phosphates and consisting essentially of a hydrogenating metal selected from Group VI-B and a hydrogenating metal selected from Group VIII, both hydrogenating metals being in a sulfided form, supported on a non-zeolitic refractory oxide carrier and promoted with from about 1 to about 10 weight percent of a Group IV-B metal by the addition of the Group IV metal to said carrier after calcination of said carrier; the improvement which comprises in the preparation of said catalyst the step of adding the titanium to said carrier by contacting said carrier with an aqueous solution of a titanium salt.
Claim 2
Dependent Claim
134 words
In a process for the hydrodesulfurization of a sulfur-containing hydrocarbon stock selected from the group consisting of naphtha and heavier hydrocarbons which comprises contacting the hydrocarbon stock under hydrodesulfurization conditions with a catalsyt substantially free of phosphates and consisting essentially of a hydrogenating metal selected from Group VI-B and a hydrogenating metal selected from Group VIII, both hydrogenating metals being in a sulfided form, supported on a non-zeolitic refractory oxide carrier and promoted with from about 1 to about 10 weight percent of a Group IV-B metal by the addition of the Group IV metal to said carrier after calcination of said carrier; the improvement which comprises in the preparation of said catalyst the step of adding the titanium to said carrier by contacting said carrier with an aqueous solution of a titanium salt.
Claim 3
Dependent Claim
73 words
The process of claim 1 wherein said hydrodesulfurization conditions comprise a temperature in the range from about 500° to about 1,000° F., a pressure from about 100 to about 5,000 psig, a liquid hourly space velocity from about 0.10 to about 10.0 volumes of hydrocarbon stock per volume of catalyst per hour and a hydrogen feed rate from about 500 to about 10,000 standard cubic feet of hydrogen per barrel of hydrocarbon stock.
Claim 4
Dependent Claim
23 words
The process of claim 1 wherein said hydrocarbon stock contains greater than 50 percent by volume of materials boiling above about 400° F.
Claim 5
Dependent Claim
20 words
The process of claim 3 wherein the hydrocarbon stock contains substantial quantities of residual components, asphaltic materials and metalliferous contaminants.
Claim 6
Dependent Claim
26 words
The process of claim 1 in which the atomic ratio of Group VIII to Group VI metals is in the range of 1:0.3 to about 1:5.
Claim 7
Dependent Claim
33 words
The process of claim 1 wherein said carrier is contacted with said aqueous solution of a titanium salt after said Group VI and Group VIII hydrogenating metals have been composited with said carrier.
Claim 8
Dependent Claim
30 words
The process of claim 1 wherein said carrier is contacted with said aqueous solution of a titanium salt after said Group VI hydrogenating metal has been composited with said carrier.
Claim 9
Dependent Claim
36 words
The process of claim 1 wherein said carrier is contacted with said aqueous solution of a titanium salt and a Group VIII metal salt after said Group VI hydrogenation metal has been composited with said carrier.
Claim 10
Dependent Claim
32 words
The process of claim 1 wherein said carrier is contacted with said aqueous solution of a titanium salt simultaneously with compositing said Group VI and Group VIII hydrogenating metals with said carrier.
Claim 11
Dependent Claim
22 words
The process of claim 1 wherein said non-zeolitic refractory oxide carrier is selected from the group consisting of alumina and silica-stabilized alumina.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |