US3209049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving alkalized iron dehydrogenation catalysts
Assignee: Phillips Petroleum Co
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Filing: 1961-12-21
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Granted: 1965-09-28
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Expires: 1981-12-21
Abstract
No abstract record available.
Inventors
- 👤 Emory W Pitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:15
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/862
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A PROCESS FOR DEHYDROGENATING A MONOOLEFIN IN VAPOR FORM IN CONTACT WITH A STEAM-ACTIVE CATALYST CONSISTING ESSENTIALLY OF A PREDOMINANT AMOUNT OF IRON OXIDE AND POTASSIUM CARBONATE AND A MINOR BUT EFFECTIVE AMOUNT OF CHROMIUM OXIDE IN A REACTION ZONE UNDER DEHYDROGENATING CONDITIONS IN ADMIXTURE WITH STEAM, THE IMPROVEMENT COMPRISING CONTACTING SAID CATALYST AT A TEMPERATURE IN THE RANGE OF 1050 TO 1300*F. WITH AMMONIA IN VAPOR FORM FOR A PERIOD OF AT LEAST 5 MINUTES SO AS TO IMPROVE THE SELECTIVITY THEREOF IN SAID PROCESS.
Claim 2
Dependent Claim
87 words
IN A PROCESS FOR DEHYDROGENATING A MONOOLEFIN IN VAPOR FORM IN CONTACT WITH A STEAM-ACTIVE CATALYST CONSISTING ESSENTIALLY OF A PREDOMINANT AMOUNT OF IRON OXIDE AND POTASSIUM CARBONATE AND A MINOR BUT EFFECTIVE AMOUNT OF CHROMIUM OXIDE IN A REACTION ZONE UNDER DEHYDROGENATING CONDITIONS IN ADMIXTURE WITH STEAM, THE IMPROVEMENT COMPRISING CONTACTING SAID CATALYST AT A TEMPERATURE IN THE RANGE OF 1050 TO 1300*F. WITH AMMONIA IN VAPOR FORM FOR A PERIOD OF AT LEAST 5 MINUTES SO AS TO IMPROVE THE SELECTIVITY THEREOF IN SAID PROCESS.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |