US3205281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of selectively hydrogenating acetylenic compounds in a gas consisting predominately of olefins
Assignee: Chemetron Corp
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Filing: 1961-11-15
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Granted: 1965-09-07
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Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 Harold W Flenning
- 👤 William R Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:43
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/08; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/755; C07C2523/76; C07C2523/84; C07C2523/85; C07C2523/86; C07C2523/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A METHOD OF SELECTIVELY HYDROGENATING ACETYLENIC COMPOUNDS IN A GAS CONTAINING THE SAME AND CONTAINING OLEFINS AS A MAJOR PART OF THE UNSATURATED HYDROCARBONS, WHICH COMPRISES CONTACTING SAID GAS ADMIXED WITH HYDROGEN IN EXCESS OF THE STOICHIOMETRIC AMOUNT REQUIRED TO REDUCE SAID ACETYLENIC COMPOUNDS TO OLEFINS, WITH A CATALYST COMPRISING A CALCINED MIXTURE OF AN OXIDE OF A METAL OF THE GROUP CONSISTING OF COBALT AND NICKEL AND AN OXIDE OF A METAL OF THE GROUP CONSISTING OF CHROMIUM AND MOLYBDEUM SUPPORTED ON A CARRIER CONSISTING ESSENTIALLY OF ANHYDROUS ALPHA-ALUMINA AT A TEMPERATURE IN THE RANGE OF 250* TO 600*F. AND A PRESSURE IN THE RANGE OF 50 TO 250 P.S.I.G. FOR A PERIOD OF TIME SUFFICIENT TO HYDROGENATE SUBSTANTIALLY ALL OF SAID ACETYLENES, WHEREIN THE ALPHA-ALUMINA HAS A SURFACE AREA OF LESS THAN ABOUT FIVE SQUARE METERS PER GRAM.
Claim 2
Independent Claim
140 words
A METHOD OF SELECTIVELY HYDROGENATING ACETYLENIC COMPOUNDS IN A GAS CONTAINING THE SAME AND CONTAINING OLEFINS AS A MAJOR PART OF THE UNSATURATED HYDROCARBONS, WHICH COMPRISES CONTACTING SAID GAS ADMIXED WITH HYDROGEN IN EXCESS OF THE STOICHIOMETRIC AMOUNT REQUIRED TO REDUCE SAID ACETYLENIC COMPOUNDS TO OLEFINS, WITH A CATALYST COMPRISING A CALCINED MIXTURE OF AN OXIDE OF A METAL OF THE GROUP CONSISTING OF COBALT AND NICKEL AND AN OXIDE OF A METAL OF THE GROUP CONSISTING OF CHROMIUM AND MOLYBDEUM SUPPORTED ON A CARRIER CONSISTING ESSENTIALLY OF ANHYDROUS ALPHA-ALUMINA AT A TEMPERATURE IN THE RANGE OF 250* TO 600*F. AND A PRESSURE IN THE RANGE OF 50 TO 250 P.S.I.G. FOR A PERIOD OF TIME SUFFICIENT TO HYDROGENATE SUBSTANTIALLY ALL OF SAID ACETYLENES, WHEREIN THE ALPHA-ALUMINA HAS A SURFACE AREA OF LESS THAN ABOUT FIVE SQUARE METERS PER GRAM.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |