US3852369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for dehydrogenation of hydrocarbons
Assignee: Phillips Petroleum Co
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Filing: 1973-05-24
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Granted: 1974-12-03
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Expires: 1993-05-24
Abstract
Abstract Organic compounds are dehydrogenated to compounds having a higher degree of unsaturation by contacting the feedstock in the vapor phase in the presence of an oxygen-containing gas with a catalyst comprising at least one of nickel, cobalt or iron in association with tin and phosphorus. Representative of such conversions is the oxidative dehydrogenation of butane to butenes and butadiene, isopentane to isoamylenes and isoprene, and butenes to butadiene. The conversion products are valuable compounds particularly useful as intermediates for the preparation of polymeric materials such as synthetic rubbers and the like.
Inventors
- 👤 D Walker
- 👤 B Bertus
- 👤 F Farha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:38
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/835; B01J23/80; B01J23/90; B01J23/94; B01J27/00; B01J27/14; B01J27/16; B01J27/18; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
131 words
A PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF A PARAFFIN HYDROCARBON FEEDSTOCK HAVING FROM TWO TO 12 CARBON ATOMS WHICH COMPRISES CONTACTING SAID FEEDSTOCK WITH A CATALYST CONSISTING ESSENTIALLY OF (1) AT LEAST ONE FERROUS METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, IRON AND COBALT IN AN AMOUNT SUFFICIENT TO ADD TO THE FINAL CATALYST FROM 26 TO 75 WEIGHT PERCENT FERROUS METAL, BASED ON TOTAL WEIGHT OF THE FINAL CATALYST, (2) AT LEAST ONE TIN-CONTAINING COMPOUND IN AN AMOUNT SUFFICIENT TO ADD TO THE FINAL CATALYST ABOUT 1 TO ABOUT 50 WEIGHT PERCENT TIN, AND (3) PHOSPHOROUS IN AN AMOUNT SUFFICIENT TO ADD TO THE FINAL CATALYST ABOUT 0.5 TO ABOUT 10 WEIGHT PERCENT PHOSPHORUS, WHEREIN AT LEAST ONE OF SAID FERROUS METAL, TIN OR PHOSPHORUS IS COMBINED WITH OXYGEN.
Claim 2
Dependent Claim
131 words
A PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF A PARAFFIN HYDROCARBON FEEDSTOCK HAVING FROM TWO TO 12 CARBON ATOMS WHICH COMPRISES CONTACTING SAID FEEDSTOCK WITH A CATALYST CONSISTING ESSENTIALLY OF (1) AT LEAST ONE FERROUS METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, IRON AND COBALT IN AN AMOUNT SUFFICIENT TO ADD TO THE FINAL CATALYST FROM 26 TO 75 WEIGHT PERCENT FERROUS METAL, BASED ON TOTAL WEIGHT OF THE FINAL CATALYST, (2) AT LEAST ONE TIN-CONTAINING COMPOUND IN AN AMOUNT SUFFICIENT TO ADD TO THE FINAL CATALYST ABOUT 1 TO ABOUT 50 WEIGHT PERCENT TIN, AND (3) PHOSPHOROUS IN AN AMOUNT SUFFICIENT TO ADD TO THE FINAL CATALYST ABOUT 0.5 TO ABOUT 10 WEIGHT PERCENT PHOSPHORUS, WHEREIN AT LEAST ONE OF SAID FERROUS METAL, TIN OR PHOSPHORUS IS COMBINED WITH OXYGEN.
Claim 3
Dependent Claim
60 words
A process according to claim 1 wherein the amount of said ferrous metal is in the range of about 30 to about 45 weight percent, the amount of said tin is in the range of about 14 to about 35 weight percent, and the amount of said phosphorus is in the range of about 2 to about 6 weight percent.
Claim 4
Dependent Claim
11 words
A process according to claim 1 wherein said feedstock comprises butane.
Claim 5
Dependent Claim
29 words
A process according to claim 3 wherein said catalyst consists essentially of 26 weight percent nickel, 47 weight percent tin, 4.7 weight percent phosphorus and 0.2 weight percent potassium.
Claim 6
Dependent Claim
29 words
A process according to claim 3 wherein said catalyst consists essentially of 32 weight percent nickel, 37 weight percent tin, 2.8 weight percent phosphorus and 0.09 weight percent potassium.
Claim 7
Dependent Claim
11 words
A process according to claim 1 wherein said feedstock comprises isopentane.
Claim 8
Dependent Claim
15 words
A process according to claim 6 wherein said catalyst has a Ni:Sn:P ratio of 3:1:1.
Claim 9
Dependent Claim
19 words
The process of claiM 1 wherein said feedstock is a paraffin hydrocarbon having from four to 12 carbon atoms.
References Cited (Backward Citations)
US3414631A
Cited
US3555105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |