US2991322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation in the presence of oxygen and bismuth tungstate
Assignee: Shell USA Inc
•
Filing: 1959-12-29
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Granted: 1961-07-04
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Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 Warren E Armstrong
- 👤 Hervey H Voge
- 👤 Charles R Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:06
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
PROCESS FOR THE SELECTIVE DEHYDROGENATION OF A MONOOLEFIN ALIPHATIC HYDROCARBON HAVING FROM 4 TO 7 NONQUATERNARY CONTIGUOUS CARBON ATOMS TO PRODUCE AS THE MAJOR REACTION PRODUCT A HYDROCARBON HAVING THE SAME NUMBER OF CARBON ATOMS BUT AT LEAST ONE MORE ETHYLENIC BOND WHICH COMPRISES PASSING THE FIRST SAID HYDROCARBON IN THE VAPOR PHASE TOGETHER WITH OXYGEN IN A RATIO OF ABOUT 0.3 TO 2.0 MOLES OF OXYGEN PER MOLE OF MONOOLEFIN THROUGH A REACTION ZONE IN CONTACT WITH A SOLID CATALYST COMPRISING A BISMUTH TUNGSTATE AS ITS MAIN ACTIVE CONSTITUENT AT A TEMPERATURE BETWEEN ABOUT 750 AND 1100*F., A PRESSURE BETWEEN ABOUT 5 AND 300 P.S.I.A., COOLING THE EFFLUENT FROM SAID REACTION ZONE, SEPARATING FIXED GASES FROM A LIQUID HYDROCARBON PHASE AND RECOVERING SAID SECOND MENTIONED HYDROCARBON FROM SAID HYDROCARBON PHASE.
Claim 2
Dependent Claim
131 words
PROCESS FOR THE SELECTIVE DEHYDROGENATION OF A MONOOLEFIN ALIPHATIC HYDROCARBON HAVING FROM 4 TO 7 NONQUATERNARY CONTIGUOUS CARBON ATOMS TO PRODUCE AS THE MAJOR REACTION PRODUCT A HYDROCARBON HAVING THE SAME NUMBER OF CARBON ATOMS BUT AT LEAST ONE MORE ETHYLENIC BOND WHICH COMPRISES PASSING THE FIRST SAID HYDROCARBON IN THE VAPOR PHASE TOGETHER WITH OXYGEN IN A RATIO OF ABOUT 0.3 TO 2.0 MOLES OF OXYGEN PER MOLE OF MONOOLEFIN THROUGH A REACTION ZONE IN CONTACT WITH A SOLID CATALYST COMPRISING A BISMUTH TUNGSTATE AS ITS MAIN ACTIVE CONSTITUENT AT A TEMPERATURE BETWEEN ABOUT 750 AND 1100*F., A PRESSURE BETWEEN ABOUT 5 AND 300 P.S.I.A., COOLING THE EFFLUENT FROM SAID REACTION ZONE, SEPARATING FIXED GASES FROM A LIQUID HYDROCARBON PHASE AND RECOVERING SAID SECOND MENTIONED HYDROCARBON FROM SAID HYDROCARBON PHASE.
References Cited (Backward Citations)
US2362196A
Cited
US2874191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |