US2915478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of a cobalt oxide-molybdenum oxide-alumina catalyst
Assignee: Sinclair Refining Co
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Filing: 1955-12-05
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Granted: 1959-12-01
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Expires: 1975-12-05
Abstract
No abstract record available.
Inventors
- 👤 Erickson Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:03
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD FOR PREPARING A COBALT OXIDE-MOLYBDENUM OXIDE-ALUMINA CATALYST CONTAINING FROM ABOUT 1 TO 20 WEIGHT PERCENT OF COBALT CALCULATED AS COBALTOUS OXIDE AND ABOUT 2 TO 25 WEIGHT PERCENT OF MOLYBDENUM CALCULATED AS MOLYBDEUM TRIOXIDE, WHICH COMPRISES ADDING ALUMINA, COBALTOUS SULFATE AND AT LEAST SUFFICIENT SODIUM CARBONATE TO REACT WITH ALL OF THE COBALT SULFATE, TO WATER TO FORM A SUSPENSION, HEATING THE RESULTING SUSPENSION TO A TEMPERATURE OF AT LEAST 150*F. UNTIL SUBSTANTIAL EVOLUTION OF A CARBON DIOXIDE CEASES, SEPARATING THE SOLIDS FROM THE SUSPENSION, WASHING WITH WATER UNTIL SULFATE IONS ARE REMOVED, DRYING THE SOLIDS, IMPREGNATING THE SOLIDS WITH AN AQUEOUS SOLUTION OF AMMONIUM MOLYBDATE AND CALCINING THE IMPREGNATED SOLIDS.
Claim 2
Independent Claim
113 words
A METHOD FOR PREPARING A COBALT OXIDE-MOLYBDENUM OXIDE-ALUMINA CATALYST CONTAINING FROM ABOUT 1 TO 20 WEIGHT PERCENT OF COBALT CALCULATED AS COBALTOUS OXIDE AND ABOUT 2 TO 25 WEIGHT PERCENT OF MOLYBDENUM CALCULATED AS MOLYBDEUM TRIOXIDE, WHICH COMPRISES ADDING ALUMINA, COBALTOUS SULFATE AND AT LEAST SUFFICIENT SODIUM CARBONATE TO REACT WITH ALL OF THE COBALT SULFATE, TO WATER TO FORM A SUSPENSION, HEATING THE RESULTING SUSPENSION TO A TEMPERATURE OF AT LEAST 150*F. UNTIL SUBSTANTIAL EVOLUTION OF A CARBON DIOXIDE CEASES, SEPARATING THE SOLIDS FROM THE SUSPENSION, WASHING WITH WATER UNTIL SULFATE IONS ARE REMOVED, DRYING THE SOLIDS, IMPREGNATING THE SOLIDS WITH AN AQUEOUS SOLUTION OF AMMONIUM MOLYBDATE AND CALCINING THE IMPREGNATED SOLIDS.
References Cited (Backward Citations)
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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) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |