US3911039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of botadiene from N-butene
Assignee: Standard Oil Co
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Filing: 1974-01-23
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Granted: 1975-10-07
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Expires: 1994-01-23
Abstract
Abstract Catalysts containing molybdenum, bismuth, iron and nickel, cobalt, magnesium, zinc, cadmium, manganese calcium or mixture thereof and an alkali metal or T1 are promoted by an element selected from antimony and tin to give highly desirable catalysts for the oxidative dehydrogenation of olefins of 4 to about 10 carbon atoms.
Inventors
- 👤 Robert K Grasselli
- 👤 Harley F Hardman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:08
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8876; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
IN THE PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF NBUTENE TO BUTADIENE COMPRISING CONTACTING A MIXTURE OF THE N-BUTENE AND MOLECULAR OXYGEN WITH A CATALYST AT A TEMPERATURE OF ABOUT 200* TO ABOUT 600*C., THE IMPROVEMENT COMPRISING USING AS THHE CATALYST A CATALYST WHEREIN THE ATOMIC RATIOS ARE DESCRIBED BY THE EMPIRICAL FORMULA
Claim 2
Dependent Claim
52 words
IN THE PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF NBUTENE TO BUTADIENE COMPRISING CONTACTING A MIXTURE OF THE N-BUTENE AND MOLECULAR OXYGEN WITH A CATALYST AT A TEMPERATURE OF ABOUT 200* TO ABOUT 600*C., THE IMPROVEMENT COMPRISING USING AS THHE CATALYST A CATALYST WHEREIN THE ATOMIC RATIOS ARE DESCRIBED BY THE EMPIRICAL FORMULA
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein D is nickel, cobalt, magnesium or mixture thereof.
Claim 4
Dependent Claim
9 words
The process of claim 1 wherein C is potassium.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |