US3055840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ruthenium-containing catalysts and methods of making said catalysts and increasing their activity
Assignee: Engelhard Industries Inc
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Filing: 1958-01-13
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Granted: 1962-09-25
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Expires: 1978-01-13
Abstract
No abstract record available.
Inventors
- 👤 Jr John H Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:31
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/462; C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C07C29/145; C07C5/00; C07C5/02; C07C5/10; B01J37/00; B01J37/02; B01J37/03; C07C2521/00; C07C2521/06; C07C2521/18; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/46; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/20; C07C2527/232; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
52 words
A SUPPORTED RUTHENIUM-CONTAINING CATALYST COMPRISING A SOLID CATALYST SUPPORT AND DEPOSITED THEREON RUTHENIUM, AND AS A PROMOTER, A MATERIAL SELECTED FROM THE GROUPS CONSISTING OF PLATIUM, RHODIUM AND PALLADIUM, THE RUTHENIUM CONTENT OF THE CATALYST BEING AT LEAST ABOUT 20 PERCENT BY WEIGHT OF THE CATALYTICALLY ACTIVE METAL CONTENT OF THE CATALYST.
Claim 2
Dependent Claim
52 words
A SUPPORTED RUTHENIUM-CONTAINING CATALYST COMPRISING A SOLID CATALYST SUPPORT AND DEPOSITED THEREON RUTHENIUM, AND AS A PROMOTER, A MATERIAL SELECTED FROM THE GROUPS CONSISTING OF PLATIUM, RHODIUM AND PALLADIUM, THE RUTHENIUM CONTENT OF THE CATALYST BEING AT LEAST ABOUT 20 PERCENT BY WEIGHT OF THE CATALYTICALLY ACTIVE METAL CONTENT OF THE CATALYST.
Claim 3
Independent Claim
116 words
A METHOD OF MAKING A CATALYST, WHICH COMPRISES SUSPENDING A POWDERED SOLID CATALYST SUPPORT IN WATER, ADDING A SOLUTION OF A SALT OF RUTHENIUM AND A SOLUTION OF A SALT OF ANOTHER PLATIUM GROUP METAL OF THE GROUP CONSISTING OF PLATINUM, RHODIUM AND PALLADIUM TO THE SUSPENSION, THE RUTHENIUM SALT BEING ADDED IN AMOUNT SUFFICIENT TO PROVIDE A RUTHENIUM CONTENT IN THE PRODUCT CATALYST, AFTER REDUCTION BY TREATMENT WITH A REDUCING GAS, OF AT LEAST ABOUT 20 WEIGHT PERCENT OF THE CATALYTICALLY ACTIVE METAL CONTENT OF THE CATALYST, HYDROLYZING THE SALTS, HEATING AND AGITATING THE MIXTURE, SEPARATING THE SOLIDS FROM THE AQUEOUS PHASE, DRYING THE SOLIDS AND SUBJECTING THE SOLIDS TO TREATMENT WITH A REDUCING GAS.
Claim 4
Independent Claim
116 words
A METHOD OF MAKING A CATALYST, WHICH COMPRISES SUSPENDING A POWDERED SOLID CATALYST SUPPORT IN WATER, ADDING A SOLUTION OF A SALT OF RUTHENIUM AND A SOLUTION OF A SALT OF ANOTHER PLATIUM GROUP METAL OF THE GROUP CONSISTING OF PLATINUM, RHODIUM AND PALLADIUM TO THE SUSPENSION, THE RUTHENIUM SALT BEING ADDED IN AMOUNT SUFFICIENT TO PROVIDE A RUTHENIUM CONTENT IN THE PRODUCT CATALYST, AFTER REDUCTION BY TREATMENT WITH A REDUCING GAS, OF AT LEAST ABOUT 20 WEIGHT PERCENT OF THE CATALYTICALLY ACTIVE METAL CONTENT OF THE CATALYST, HYDROLYZING THE SALTS, HEATING AND AGITATING THE MIXTURE, SEPARATING THE SOLIDS FROM THE AQUEOUS PHASE, DRYING THE SOLIDS AND SUBJECTING THE SOLIDS TO TREATMENT WITH A REDUCING GAS.
Claim 5
Independent Claim
81 words
A METHOD OF INCREASING THE ACTIVITY OF A SUPPORTED RUTHENIUM-COATAINING CATALYST IN WHICH THE SUPPORT IS SELECTED FROM THE GROUP CONSISTING OF BARIUM SULFATE IS SECIUM CARBONATE AND TITANIUM DIOXIDE, WHICH COMPRISES AGING THE CATALYST HAVING A RUTHENIUM CONTENT OF AT LEAST ABOUT 20 PERCENT BY WEIGHT OF THE CATALYTICALLY ACTIVE METAL CONTENT OF THE CATALYST FOR A PERIOD OF AT LEAST 16 DAYS AT A TEMPERATURE OF FROM ROOM TEMPERATURE TO 75* C., THEREBY INCREASING THE ACTIVITY OF THE CATALYST.
Claim 6
Independent Claim
81 words
A METHOD OF INCREASING THE ACTIVITY OF A SUPPORTED RUTHENIUM-COATAINING CATALYST IN WHICH THE SUPPORT IS SELECTED FROM THE GROUP CONSISTING OF BARIUM SULFATE IS SECIUM CARBONATE AND TITANIUM DIOXIDE, WHICH COMPRISES AGING THE CATALYST HAVING A RUTHENIUM CONTENT OF AT LEAST ABOUT 20 PERCENT BY WEIGHT OF THE CATALYTICALLY ACTIVE METAL CONTENT OF THE CATALYST FOR A PERIOD OF AT LEAST 16 DAYS AT A TEMPERATURE OF FROM ROOM TEMPERATURE TO 75* C., THEREBY INCREASING THE ACTIVITY OF THE CATALYST.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |