US3598725A
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US
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Hydrocarbon desulfurization with a rhenium catalyst on siliceous carrier material
Assignee: Union Carbide Corp
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Filing: 1969-03-20
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Granted: 1971-08-10
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Expires: 1989-03-20
Abstract
Abstract A CATALYST FOR EFFECTING THE DESULFURIZATION OF SULFUROUS, HYDROCARBONACEOUS CHARGES STOCKS. THE CATALYST COMPRISES A COMPOSITE OF A SILICEOUS CARRIER MATERIAL COMBINED WITH RHENIUM SULFIDE. THE RHENIUM SULFIDE IS PRESENT IN AN AMOUNT OF FROM 0.01% TO ABOUT 2.0% BY WEIGHT, CALCULATED AS THE ELEMENTAL METAL, AND IS COMBINED WITH ONE OR MORE SULFIDED METALLIC COMPONENETS FROM GROUPS VI-B AND THE IRON-GROUP. THE USE OF THE RHENIUM COMPONENET IMPARTS ADDITIONAL HYDROGENATION ACTIVITY TO THE CATALYST.
Inventors
- 👤 Lee Hilfman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:11
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/889; B01J23/8898; B01J23/16; B01J23/32; B01J23/36; B01J23/85; B01J23/88; B01J23/8896; B01J27/00; B01J27/02; B01J27/04; B01J27/043; B01J27/047; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B01J21/00; B01J21/12
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |