Patent US3159588A successfully refreshed from Google Patents.
US3159588A
Expired / Lapsed
US
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Silica-zirconia-titania hydrocracking catalyst
Assignee: Union Oil Company of California
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Filing: 1960-06-15
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Granted: 1964-12-01
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Expires: 1980-06-15
Abstract
No abstract record available.
Inventors
- 👤 Rowland C Hansford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:06
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/08; B01J8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A HYDROGENATING-CRACKING CATALYST CONSISTING ESSENTIALLY OF COPRECIPITATED TITANIUM OXIDE, ZIRCONIUM OXIDE AND SILICON OXIDE IN INTIMATE ADMIXTURE, THE SILICA CONTENT OF SAID CATALYST MAKING UP A MINOR PROPORTION GREATER THAN 10% THEREOF, THE ZIRCONIA CONTENT BEING BETWEEN ABOUT 15% AND 65%, AND THE TITANIA CONTENT BEING BETWEEN ABOUT 15% AND 65%, SAID CATALYST HAVING BEEN PREPARED BY COPRECIPITATION OF THE HYDROUS GELS OF TITANIA, ZIRCONIA AND SILICA, FOLLOWED BY WASHING AND CALCINING OF THE MIXED HYDROUS OXIDES, SAID COPRECIPITATION STEP BEING CARRIED OUT BY ADMIXING AN AQUEOUS ALKALINE SOLUTION WITH AN AQUEOUS ACIDIC SOLUTION CONTAINING DISSOLVED TITANIUM AND ZIRCONIUM SALTS SELECTED FROM THE CLASS CONSISTING OF HALIDES, SULFATES, ACETATES AND OXALATES, A SOLUBLE SILICON COMPOUND SELECTED FROM THE CLASS CONSISTING OF ALKALI METAL SILICATES, FLUOSILICIC ACID, AND SILICA HYDROSOLS BEING DISSOLVED IN ONE OF SAID SOLUTIONS, AND CONTROLLING SAID ADMIXING SO AS TO PROVIDE AN AQUEOUS ENVIRONMENT OF PH BETWEEN ABOUT 6 AND 12 IN THE IMMEDIATE ZONE OF COPRECIPITATION.
Claim 2
Dependent Claim
160 words
A HYDROGENATING-CRACKING CATALYST CONSISTING ESSENTIALLY OF COPRECIPITATED TITANIUM OXIDE, ZIRCONIUM OXIDE AND SILICON OXIDE IN INTIMATE ADMIXTURE, THE SILICA CONTENT OF SAID CATALYST MAKING UP A MINOR PROPORTION GREATER THAN 10% THEREOF, THE ZIRCONIA CONTENT BEING BETWEEN ABOUT 15% AND 65%, AND THE TITANIA CONTENT BEING BETWEEN ABOUT 15% AND 65%, SAID CATALYST HAVING BEEN PREPARED BY COPRECIPITATION OF THE HYDROUS GELS OF TITANIA, ZIRCONIA AND SILICA, FOLLOWED BY WASHING AND CALCINING OF THE MIXED HYDROUS OXIDES, SAID COPRECIPITATION STEP BEING CARRIED OUT BY ADMIXING AN AQUEOUS ALKALINE SOLUTION WITH AN AQUEOUS ACIDIC SOLUTION CONTAINING DISSOLVED TITANIUM AND ZIRCONIUM SALTS SELECTED FROM THE CLASS CONSISTING OF HALIDES, SULFATES, ACETATES AND OXALATES, A SOLUBLE SILICON COMPOUND SELECTED FROM THE CLASS CONSISTING OF ALKALI METAL SILICATES, FLUOSILICIC ACID, AND SILICA HYDROSOLS BEING DISSOLVED IN ONE OF SAID SOLUTIONS, AND CONTROLLING SAID ADMIXING SO AS TO PROVIDE AN AQUEOUS ENVIRONMENT OF PH BETWEEN ABOUT 6 AND 12 IN THE IMMEDIATE ZONE OF COPRECIPITATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |