Patent US2945824A successfully refreshed from Google Patents.
US2945824A
Expired / Lapsed
US
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Vanadium hydrocarbon conversion catalysts
Assignee: Union Oil Company of California
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Filing: 1956-03-05
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Granted: 1960-07-19
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Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fleck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:09
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD FOR PREPARING A COPRECIPITATED, CARRIERSUPPORTED VANADIUM CATALYST WHICH COMPRISES FORMING AN AQUEOUS AMMONIUM SULFIDE SOLUTION OF A VANADIUM COMPOUND SELECTED FROM SULFIDES AND AMMONIUM METADIUM OXIDES, VANADIUM SULFIDES AND AMMONIUM METAVANADATE, ADDING THERETO AN AQUEOUS SOLUTION OF A SOLUBLE BASE-PRECIPITATABLE COMPOUND OF THE DESIRED CARRIER, AND SUFFICIENT EXCESS BASE TO PRECIPITATE SAID CARRIER, THEREBY EFFECTING COPRECIPITATION OF A HYDROUS OXIDE OF SAID CARRIER PLUS INSOLUBLED SULFIDED VANADIUM COMPOUNDS, DRYING AND CALCINING THE RESULTING COPRECIPITATE TO CONVERT SULFIDE VANADIUM COMPOUNDS THEREIN TO VANADIUM OXIDE AND TO REDUCE THE SULFUR CONTENT OF SAID CATALYST TO BELOW ABOUT 2% BY WEIGHT, SAID CARRIER BEING SELECTED FROM THE GROUP CONSISTING OF ALUMINA, SILICA, ZIRCONIA, TITANIA, THORIA AND MAGNESIA.
Claim 2
Independent Claim
116 words
A METHOD FOR PREPARING A COPRECIPITATED, CARRIERSUPPORTED VANADIUM CATALYST WHICH COMPRISES FORMING AN AQUEOUS AMMONIUM SULFIDE SOLUTION OF A VANADIUM COMPOUND SELECTED FROM SULFIDES AND AMMONIUM METADIUM OXIDES, VANADIUM SULFIDES AND AMMONIUM METAVANADATE, ADDING THERETO AN AQUEOUS SOLUTION OF A SOLUBLE BASE-PRECIPITATABLE COMPOUND OF THE DESIRED CARRIER, AND SUFFICIENT EXCESS BASE TO PRECIPITATE SAID CARRIER, THEREBY EFFECTING COPRECIPITATION OF A HYDROUS OXIDE OF SAID CARRIER PLUS INSOLUBLED SULFIDED VANADIUM COMPOUNDS, DRYING AND CALCINING THE RESULTING COPRECIPITATE TO CONVERT SULFIDE VANADIUM COMPOUNDS THEREIN TO VANADIUM OXIDE AND TO REDUCE THE SULFUR CONTENT OF SAID CATALYST TO BELOW ABOUT 2% BY WEIGHT, SAID CARRIER BEING SELECTED FROM THE GROUP CONSISTING OF ALUMINA, SILICA, ZIRCONIA, TITANIA, THORIA AND MAGNESIA.
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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |