US3871998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurization of heavy hydrocarbon feedstocks with nonstoichiometric titanium carbide catalyst support
Assignee: Individual
•
Filing: 1973-10-15
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Granted: 1975-03-18
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Expires: 1993-10-15
Abstract
Abstract Hydrodesulfurization of heavy hydrocarbon feedstocks boiling above 650*F utilizes Group VI-B and/or Group VIII metal, metal oxide, metal sulfide or mixtures thereof, composited with a nonstoichiometric titanium carbide support, particularly a support wherein the titanium carbide is an interstitial solid solution that possesses a stable phase over the stoichiometric range TiC0.52 to TiC0.99, and preferably within a range of TiC0.70 to TiC0.95. By varying the stoichiometry of the titanium carbide support within the limits described, an interaction is created between the hydrogenation-dehydrogenation component and the support, and the activity and selectivity of the reactions can be controlled and optimized.
Inventors
- 👤 Howard F Rase
- 👤 Larry A Maddox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:27
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J27/00; B01J27/20; B01J27/22; C10G35/085; C10G35/09; C10G45/00; C10G45/02; C10G45/04; C07; C07C; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/28; C07C2523/30; C07C2523/32; C07C2523/36; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/46; C07C2523/70; C07C2523/74; C07C2523/745; C07C2523/75; C07C2523/755; C07C2527/00; C07C2527/02; C07C2527/04; C07C2527/043; C07C2527/045; C07C2527/047; C07C2527/051; C07C2527/20; C07C2527/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A PROCESS FOR THE HYDRODESULFURIZATION OF A SULFURCONTAINING HEAVY HYDROCARBON FEEDSTOCK BOILING ABOVE ABOUT 650*F. WHICH COMPRISES CONTACTING SAID FEEDSTOCK WITH HYDROGEN AND A CATALYST COMPOSIE COMPRISING FROM ABOUT 0.1 TO ABOUT 25 WEIGHT PERCENT OF SAID COMPOSITE OF A HYDROGENATION COMPONENT SELECTED FROM THE GROUP CONSISTING OF A METAL, METAL OXIDE, METAL SULFIDE, OR MIXTURES THEREOF, SELECTED FROM GROUP VI-B, GROUP VIII OR MIXTURE OF SAID GROUPS OF THE PERIODIC CHART OF THE ELEMENTS AND TITANIUM CARBIDE BASE CHARACTERIZED AS A STABLE PHASE SOLID OF STOICHIOMETRY RANGING FROM TIC0.52 TO TIC0.99.
Claim 2
Dependent Claim
92 words
A PROCESS FOR THE HYDRODESULFURIZATION OF A SULFURCONTAINING HEAVY HYDROCARBON FEEDSTOCK BOILING ABOVE ABOUT 650*F. WHICH COMPRISES CONTACTING SAID FEEDSTOCK WITH HYDROGEN AND A CATALYST COMPOSIE COMPRISING FROM ABOUT 0.1 TO ABOUT 25 WEIGHT PERCENT OF SAID COMPOSITE OF A HYDROGENATION COMPONENT SELECTED FROM THE GROUP CONSISTING OF A METAL, METAL OXIDE, METAL SULFIDE, OR MIXTURES THEREOF, SELECTED FROM GROUP VI-B, GROUP VIII OR MIXTURE OF SAID GROUPS OF THE PERIODIC CHART OF THE ELEMENTS AND TITANIUM CARBIDE BASE CHARACTERIZED AS A STABLE PHASE SOLID OF STOICHIOMETRY RANGING FROM TIC0.52 TO TIC0.99.
Claim 3
Dependent Claim
38 words
The process of claim 1 wherein said hydrogenation component is selected from the group consisting of cobalt metal, molybdenum metal, oxides of said metals, sulfides of said metals and mixtures of said metals, said oxides and said sulfides.
Claim 4
Dependent Claim
27 words
The process of claim 1 wherein said hydrogenation component is incorporated in an amount of from about 0.3 to about 15 percent by weight of said composite.
Claim 5
Dependent Claim
22 words
The process of claim 3 wherein said hydrogenation component is selected from the group consisting of platinum, palladium, tungsten, nickel, and cobalt.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |