US3850746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodenitrogenation of hydrocarbon feedstocks with a catalyst composite of chrysotile and hydrogenation metal
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1973-08-24
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Granted: 1974-11-26
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Expires: 1993-08-24
Abstract
Abstract Hydrocarbon feedstocks are hydrodenitrogenated with a chrysotile catalyst combined with a hydrogenation component selected from Group VIB Group VIIB and Group VIII metals. Representative of these metals are cobalt, nickel, molybdenum, tungsten and mixtures thereof. The chrysotile may be in the physical form of tubes with surface area of 55-250 m2/g or in the form of flakes with surface area of 250-500 m2/g.
Inventors
- 👤 H Robson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:34
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; B; B01; B01J; B01J21/00; B01J21/16; B01J23/00; B01J23/16; B01J23/24; B01J23/70; B01J23/74; B01J23/76; B01J23/84; B01J35/00; B01J35/80; C01B33/26; C01B33/36; C01B33/38; C01B33/40; C01B33/42; C01B33/46; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G35/00; C10G35/04; C10G35/06; C10G45/00; C10G45/02; C10G45/04; C10G45/12; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G49/00; C10G49/02; C10G49/08; B01J2235/00; B01J2235/15; B01J35/70; C07; C07C; C07C2521/00; C07C2521/06; C07C2521/08; C07C2521/10; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/30; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/755; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
33 words
A PROCESS FOR THE HYDRODENITROGENATION OF A NITROGENCONTAINING HYDROCARBON FEEDSTOCK BOILING ABOVE ABOUT 180*C. WHICH COMPRISES CONTACTING SAID FEEDSTOCK WITH HYDROGEN AND A CATALYST COMPOSITE COMPRISING A CHRYSOTILE COMBINED WITH A HYDROGENATION COMPONENT.
Claim 2
Dependent Claim
33 words
A PROCESS FOR THE HYDRODENITROGENATION OF A NITROGENCONTAINING HYDROCARBON FEEDSTOCK BOILING ABOVE ABOUT 180*C. WHICH COMPRISES CONTACTING SAID FEEDSTOCK WITH HYDROGEN AND A CATALYST COMPOSITE COMPRISING A CHRYSOTILE COMBINED WITH A HYDROGENATION COMPONENT.
Claim 3
Dependent Claim
32 words
The process of claim 1 wherein said process is conducted at temperatures ranging from about 350*C. to about 390*C. at start-of-run conditions and from about 390*C. to about 430*C. at end-of-run conditions.
Claim 4
Dependent Claim
24 words
The process of claim 1 wherein said hydrogenation component is selected from the group consisting of Group VIB, Group VIIB and Group VIII metals.
Claim 5
Dependent Claim
23 words
The process of claim 3 wherein the hydrogenation component is selected from the group consisting of cobalt, nickel, molybdenum, tungsten and mixtures thereof.
Claim 6
Dependent Claim
31 words
The process of claim 1 wherein said chrysotile is in the physical form of tubes, and the surface area of said tubes ranges from about 55 m2/g to about 250 m2/g.
Claim 7
Dependent Claim
31 words
The process of claim 1 wherein said chrysotile is in the physical form of flakes, and the surface area of said flakes ranges from about 250 m2/g to about 500 m2/g.
Claim 8
Dependent Claim
22 words
The process of claim 1 wherein said hydrodenitrogenation process is conducted at pressures ranging from about 500 psi to about 2,000 psi.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |