US3793225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidative dehydrogenation catalyst
Assignee: Phillips Petroleum Co
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Filing: 1971-05-06
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Granted: 1974-02-19
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Expires: 1991-05-06
Abstract
Abstract ORGANIC COMPOUNDS ARE DEHYDROGENATED TO COMPOUNDS HAVING A HIGHER DEGREE OF UNSATURATION BY CONTACTING THE FEEDSTOCK IN THE VAPOR PHASE AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF AN OXYGEN-CONTAINING GAS WITH A CALCINED CATALYST CONTAINING A FERROUS GROUP METAL, E.G., NICKEL, IN COMBINATION WITH PHOSPHROUS, AT LEAST ONE GROUP IIA METAL AND OXYGEN. REPRESENTATIVE OF SUCH CONVERSIONS IS THE OXIDATIVE DEHYDROGENATION OF BUTANE TO 1,3-BUTADIENE. THE CONVERSION PRODUCTS ARE VALUABLE COMJPOUNDS PARTICULARYL USEFUL AS INTERMEDIATES FOR THE PREPARATION OF POLYMERIC MATERIALS SUCH AS SYNTHETIC RUBBERS AND THE LIKE.
Inventors
- 👤 B Bertus
- 👤 D Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:53
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J23/00; B01J23/70; B01J23/89; B01J23/8933; B01J23/8946; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |