US2946829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective hydrogenation and palladium catalyst therefor
Assignee: Chemetron Corp
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Filing: 1958-07-15
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Granted: 1960-07-26
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Expires: 1978-07-15
Abstract
No abstract record available.
Inventors
- 👤 Likins Merle
- 👤 John F Strotman
- 👤 Donald O Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:03
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/163; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44; C07C5/00; C07C5/02; B01J21/00; B01J21/02; B01J21/04; B01J37/00; B01J37/02; B01J37/03; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
75 words
A CATALYST, SUITABLE FOR SELECTIVE HYDROCARBON OF HIGHLY UNSATURATED HYDROCARBONS IN A CONCENTRATED OLEFIN STREAM, WHICH COMPRISES FROM 0.01 TO 0.09% BY WEIGHT OF PALLADIUM METAL ON AN ALUMINA CARRIER, SAID CATALYST CHARACTERIZED BY A PORE VOLUME OF SURFACE PORES HAVING A THRESHOLD DIAMETER NOT GREATER THAN 800 A. IN THE RANGE OF FROM 0.0 TO 0.4 CC./GM. AND FURTHER CHARACTERIZED IN THAT THE PALLADIUM IS PREDOMINANTLY CONCENTRATED IN THE EXTERNAL PORTIONS OF THE CARRIER.
Claim 2
Dependent Claim
75 words
A CATALYST, SUITABLE FOR SELECTIVE HYDROCARBON OF HIGHLY UNSATURATED HYDROCARBONS IN A CONCENTRATED OLEFIN STREAM, WHICH COMPRISES FROM 0.01 TO 0.09% BY WEIGHT OF PALLADIUM METAL ON AN ALUMINA CARRIER, SAID CATALYST CHARACTERIZED BY A PORE VOLUME OF SURFACE PORES HAVING A THRESHOLD DIAMETER NOT GREATER THAN 800 A. IN THE RANGE OF FROM 0.0 TO 0.4 CC./GM. AND FURTHER CHARACTERIZED IN THAT THE PALLADIUM IS PREDOMINANTLY CONCENTRATED IN THE EXTERNAL PORTIONS OF THE CARRIER.
Claim 3
Dependent Claim
50 words
A METHOD OF SELECTIVELY HYDROGENATING HIGHLY UNSATURATED HYDROCARBONS IN A CONCENTRATED OLEFIN STREAM WHICH COMPRISES PASSING SAID CONCENTRATED OLEFIN STREAM OVER A PALLADIUM ON ALUMINA CATALYST AS DEFINED BY CLAIM 1 AT A TEMPERATURE IN THE RANGE OF 100* TO 400*F. AND AN HOURLY SPACE VELOCITY OF 425 TO 1600.
Claim 4
Independent Claim
115 words
A METHOD OF MAKING CATALYST, SUITABLE FOR THE SELECTIVE HYDROGENATION OF HIGHLY UNSATURATED HYDROCARBONS IN A CONCENTRATED OLEFIN STREAM, WHICH COMPRISES THE STEP OF SPRAYING A SOLUTION OF A PALLADIUM SALT ONOT AN ALUMINA CARRIER POSSESSING AN INITIAL PORE VOLUME OF FROM 0.00 TO 0.40 CC./GM. OF PORES HAVING A THRESHOLD DIAMETER OF LESS THAN 800 A., CHARACTERIZED IN THAT THE VOLUME OF THE SALT SOLUTION IN RELATION TO THE VOLUME OF THE SOLID CARRIER IS IN THE RANGE OF FORM 1:12 TO 1:5 AND FURTHER CHARACTERIZED IN THAT THE CONCENTRATION OF THE SALT SOLUTION IS REGULATED SO AS TO PRODUCE A FINISHED CATALYST WITH A PALLADIUM CONCENTRATION OF FROM 0.01 TO O.09% BY WEIGHT.
Claim 5
Independent Claim
115 words
A METHOD OF MAKING CATALYST, SUITABLE FOR THE SELECTIVE HYDROGENATION OF HIGHLY UNSATURATED HYDROCARBONS IN A CONCENTRATED OLEFIN STREAM, WHICH COMPRISES THE STEP OF SPRAYING A SOLUTION OF A PALLADIUM SALT ONOT AN ALUMINA CARRIER POSSESSING AN INITIAL PORE VOLUME OF FROM 0.00 TO 0.40 CC./GM. OF PORES HAVING A THRESHOLD DIAMETER OF LESS THAN 800 A., CHARACTERIZED IN THAT THE VOLUME OF THE SALT SOLUTION IN RELATION TO THE VOLUME OF THE SOLID CARRIER IS IN THE RANGE OF FORM 1:12 TO 1:5 AND FURTHER CHARACTERIZED IN THAT THE CONCENTRATION OF THE SALT SOLUTION IS REGULATED SO AS TO PRODUCE A FINISHED CATALYST WITH A PALLADIUM CONCENTRATION OF FROM 0.01 TO O.09% BY WEIGHT.
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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |