US3758609A
Expired / Lapsed
US
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Processes for the oxidative dehydrogenation of hydrocarbon feedstocks
Assignee: Phillips Petroleum Co
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Filing: 1971-01-11
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Granted: 1973-09-11
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Expires: 1991-01-11
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 containing cobalt, iron and antimony in an oxidized state or nickel-iron-antimony in an oxidized state. Representative of such conversions is the oxidative dehydrogenation of isopentane to isoprene over a nickel-ironantimony-oxygen catalyst having a nickel:iron:antimony atomic ratio of 1:3:1. The conversion products are valuable compounds particularly useful as intermediates for the preparation of polymeric materials such as synthetic rubbers and the like.
Inventors
- 👤 R Cichowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:27
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/843; B01J23/8435; B01J37/00; B01J37/12; B01J37/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
11 words
A process according to claim 1 wherein said feedstock comprises isopentane.
Claim 2
Dependent Claim
24 words
A process for preparing olefins and diolefins by the dehydrogenation of paraffinic feedstocks containing from three to 12 carbon atoms and at least one
Claim 3
Dependent Claim
11 words
A process according to claim 3 wherein said feedstock comprises isopentane.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |