US3100234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation catalyst
Assignee: Monsanto Chemicals Ltd
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Filing: 1961-05-22
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Granted: 1963-08-06
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Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Emerson H Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:35
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/862; B01J23/78; C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR THE DEHYDORGENATION OF ETHYLBENZENE WHICH COMPRISES CONTACTING ETHYLBENZENE IN THE PRESENCE OF STEAM UNDER DEHYDROGENATION CONDITIONS WITH A CATALYST COMPRISING IRON OXIDE AS THE ACTIVE CATALYTIC AGENT AND A COMPOSITE PROMOTER THEREFOR CONSISTING OF A MIXTURE OF A COMPOUND OF POTASSIUM AND A COMPOUND OF A METAL CHOSEN FROM THE GROUP CONSISTING OF SODIUM, LITHIUM, BARIUM, MAGNESIUM, AND CALCIUM WHEREIN THE AMOUNT OF SAID POTASSIUM COMPOUND IN SAID COMPOSITE PROMOTER IS AT LEAST 1% BY WEIGHT OF THE TOTAL CATALYST COMPOSITION AND THE WEIGHT RATIO OF SAID REMAINING METAL COMPOUND TO SAID POTASSIUM COMPOUND IS FROM 1:1 TO ABOUT 5:1
Claim 2
Dependent Claim
103 words
A PROCESS FOR THE DEHYDORGENATION OF ETHYLBENZENE WHICH COMPRISES CONTACTING ETHYLBENZENE IN THE PRESENCE OF STEAM UNDER DEHYDROGENATION CONDITIONS WITH A CATALYST COMPRISING IRON OXIDE AS THE ACTIVE CATALYTIC AGENT AND A COMPOSITE PROMOTER THEREFOR CONSISTING OF A MIXTURE OF A COMPOUND OF POTASSIUM AND A COMPOUND OF A METAL CHOSEN FROM THE GROUP CONSISTING OF SODIUM, LITHIUM, BARIUM, MAGNESIUM, AND CALCIUM WHEREIN THE AMOUNT OF SAID POTASSIUM COMPOUND IN SAID COMPOSITE PROMOTER IS AT LEAST 1% BY WEIGHT OF THE TOTAL CATALYST COMPOSITION AND THE WEIGHT RATIO OF SAID REMAINING METAL COMPOUND TO SAID POTASSIUM COMPOUND IS FROM 1:1 TO ABOUT 5:1
References Cited (Backward Citations)
US2813137A
Cited
US2851502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |