US3124541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of silica-
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:56
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR PREPARING A SILICA-ALUMINA CRACKING CATALYST WHICH COMPRISES PROVIDING AN AQUEOUS SODIUM SILICATE SOLUTION HAVING A SILICA TO SODIUM OXIDE MOLE RATIO OF ABOUT 3:1 TO 3.4:1, HEATING SAID SOLUTION TO A TEMPERATURE OF ABOUT 80-150*F., COGELING THE SILICATE SOLUTION WITH A SLURRY CONTAINING ALUMINUM SULFATE AND ALUMINUM TRIHYDRATE IN WHICH THE MOLE RATIO SULFATE IONS TO ALUMINA EXPRESSED AS AL2O3 IS 1.5:1 IN AN AMOUNT SUFFICIENT TO REACT WITH THE SODIUM SILICATE PRESENT IN THE MIXTURE TO GIVE A PH OF ABOUT 5 AND PURIFYING AND DRYING THE RESULTING COMPOSITE.
Claim 2
Dependent Claim
93 words
A PROCESS FOR PREPARING A SILICA-ALUMINA CRACKING CATALYST WHICH COMPRISES PROVIDING AN AQUEOUS SODIUM SILICATE SOLUTION HAVING A SILICA TO SODIUM OXIDE MOLE RATIO OF ABOUT 3:1 TO 3.4:1, HEATING SAID SOLUTION TO A TEMPERATURE OF ABOUT 80-150*F., COGELING THE SILICATE SOLUTION WITH A SLURRY CONTAINING ALUMINUM SULFATE AND ALUMINUM TRIHYDRATE IN WHICH THE MOLE RATIO SULFATE IONS TO ALUMINA EXPRESSED AS AL2O3 IS 1.5:1 IN AN AMOUNT SUFFICIENT TO REACT WITH THE SODIUM SILICATE PRESENT IN THE MIXTURE TO GIVE A PH OF ABOUT 5 AND PURIFYING AND DRYING THE RESULTING COMPOSITE.
References Cited (Backward Citations)
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Cited
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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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |