Patent US2852472A successfully refreshed from Google Patents.
US2852472A
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Method of preparing an alumina-silica-platinum-fluorine reforming catalyst
Assignee: WR Grace and Co
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Filing: 1954-06-04
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Granted: 1958-09-16
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Expires: 1974-06-04
Abstract
No abstract record available.
Inventors
- 👤 Wayne T Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:46
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/128; B01J27/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD FOR PREPARING A GASOLINE REFORMING CATALYST WHICH COMPRISES IMPREGNATING CALCINED ALUMINA WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SILICON TETRAFLUORIDE AND FLUOSILICIC ACID IN AMOUNT SUFFICIENT TO INCORPORATE ABOUT 0.03-3 WEIGHT PERCENT SILICA AND 0.1-8 WEIGHT PERCENT FLUORINE IN THE FINAL CATALYST, COMMINGLING THE THUS-IMPREGNATED ALUMINA WITH AN AQUEOUS SOLUTION OF CHLOROPLATINIC ACID IN AMOUNT SUFFICIENT TO INCORPORATE 0.1-2 WEIGHT PERCENT PLATINUM IN THE FINAL CATALYST, DRYING THE RESULTANT COMPOSITE, AND CONVERTING THE ADSORBED PLATINUM COMPOUND TO THE METALLIC STATE.
Claim 2
Independent Claim
84 words
A METHOD FOR PREPARING A GASOLINE REFORMING CATALYST WHICH COMPRISES IMPREGNATING CALCINED ALUMINA WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SILICON TETRAFLUORIDE AND FLUOSILICIC ACID IN AMOUNT SUFFICIENT TO INCORPORATE ABOUT 0.03-3 WEIGHT PERCENT SILICA AND 0.1-8 WEIGHT PERCENT FLUORINE IN THE FINAL CATALYST, COMMINGLING THE THUS-IMPREGNATED ALUMINA WITH AN AQUEOUS SOLUTION OF CHLOROPLATINIC ACID IN AMOUNT SUFFICIENT TO INCORPORATE 0.1-2 WEIGHT PERCENT PLATINUM IN THE FINAL CATALYST, DRYING THE RESULTANT COMPOSITE, AND CONVERTING THE ADSORBED PLATINUM COMPOUND TO THE METALLIC STATE.
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |