US3260768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidative dehydrogenation of olefins using an antimony oxide-iron oxide catalyst
Assignee: Standard Oil Co
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Filing: 1962-06-11
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Granted: 1966-07-12
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Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 James L Callahan
- 👤 Gertisser Berthold
- 👤 Grasselli Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:02
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/843; B01J23/8435; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF OLEFINS TO DIOLEFINS WHICH COMPRISES CONTACTING A MIXTURE OF OXYGEN AND AN OLEFIN HAVING AT LEAST FOUR UP TO ABOUT EIGHT NONQUATERNARY CARBON ATOMS, OF WHICH AT LEAST FOUR ARE ARRANGED IN A SERIES, IN THE VAPOR PHASE AT A TEMPERATURE AT WHICH THE OXIDATIVE DEHYDROGENATION PROCEEDS WITH A CATALYST CONSISTING ESSENTIALLY OF AN ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND IRON, THE SB:FE ATOMIC RATIO BEING WITHIN THE RANGE FROM ABOUT 1:50 TO ABOUT 99:1, SAID COMPLEX BEING FORMED BY HEATING THE MIXED OXIDES OF ANTIMONY AND IRON IN THE PRESENCE OF OXYGEN AT AN ELEVATED TEMPERATURE OF ABOVE 500*F. BUT BELOW THEIR MELTING POINT FOR A TIME SUFFICIENT TO FORM SAID ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND IRON.
Claim 2
Dependent Claim
128 words
THE PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF OLEFINS TO DIOLEFINS WHICH COMPRISES CONTACTING A MIXTURE OF OXYGEN AND AN OLEFIN HAVING AT LEAST FOUR UP TO ABOUT EIGHT NONQUATERNARY CARBON ATOMS, OF WHICH AT LEAST FOUR ARE ARRANGED IN A SERIES, IN THE VAPOR PHASE AT A TEMPERATURE AT WHICH THE OXIDATIVE DEHYDROGENATION PROCEEDS WITH A CATALYST CONSISTING ESSENTIALLY OF AN ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND IRON, THE SB:FE ATOMIC RATIO BEING WITHIN THE RANGE FROM ABOUT 1:50 TO ABOUT 99:1, SAID COMPLEX BEING FORMED BY HEATING THE MIXED OXIDES OF ANTIMONY AND IRON IN THE PRESENCE OF OXYGEN AT AN ELEVATED TEMPERATURE OF ABOVE 500*F. BUT BELOW THEIR MELTING POINT FOR A TIME SUFFICIENT TO FORM SAID ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND IRON.
References Cited (Backward Citations)
US1975476A
Cited
US2945900A
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FR1287214A
Cited
GB902952A
Cited
US3159688A
Cited
US3142697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |