Patent US3116259A successfully refreshed from Google Patents.
US3116259A
Expired / Lapsed
US
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Method of preparing isomerization catalyst
Assignee: Pure Oil Co
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Filing: 1960-03-30
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Granted: 1963-12-31
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Expires: 1980-03-30
Abstract
No abstract record available.
Inventors
- 👤 Marcollus J Geerts
- 👤 Charles T O'malley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:08
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44; C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791; B01J37/00; B01J37/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A METHOD OF PREPARING AN ISOMERIZATION CATALYST RESISTANT TO SULFUR AGING WHICH COMPRISES REACTING A SILICAALUMINA SUPPORT WHICH HAS BEEN PREDRIED AT ELEVATED TEMPERATURE UNDER CONDITIONS TO LEAVE STRUCTURAL HYDROXYL GROUPS IN THE SILICA-ALUMINA AND WHICH CONTAINS 70-90% SILICA, WITH 1-100% OF THE STOICHIOMETRIC AMOUNT OF A SUBSTANCE, SELECTED FROM THE GROUP CONSISTING OF SULFUR AND COMPOUNDS CONTAINING SULFUR REACTABLE WITH THE HYDROXYL GROUPS IN THE SILICA-ALUMINA, REQURED TO REACT WITH THE HYDROXYL GROUPS IN THE SILICA-ALUMINA, AT A TEMPERATURE OF 400*-1000*F. UNTIL REACTION WITH LTHE HYDROXYL GROUPS IS COMPLETE, AS EVIDENCED BY CESSATION OF EVOLUTION OF BYPRODUCT VAPORS, SUBSEQUENTLY IMPREGNATING THE TREATED SUPPORT WITH A SOLUTION OF A PALLADIUM COMPOUND TO A PALLADIUM CONTENT OF 0.4-0.8% WT., AND ACTIVATING THE CATALYST BY REDUCTION WITH HYDROGEN AT 750*-975*F.
Claim 2
Independent Claim
128 words
A METHOD OF PREPARING AN ISOMERIZATION CATALYST RESISTANT TO SULFUR AGING WHICH COMPRISES REACTING A SILICAALUMINA SUPPORT WHICH HAS BEEN PREDRIED AT ELEVATED TEMPERATURE UNDER CONDITIONS TO LEAVE STRUCTURAL HYDROXYL GROUPS IN THE SILICA-ALUMINA AND WHICH CONTAINS 70-90% SILICA, WITH 1-100% OF THE STOICHIOMETRIC AMOUNT OF A SUBSTANCE, SELECTED FROM THE GROUP CONSISTING OF SULFUR AND COMPOUNDS CONTAINING SULFUR REACTABLE WITH THE HYDROXYL GROUPS IN THE SILICA-ALUMINA, REQURED TO REACT WITH THE HYDROXYL GROUPS IN THE SILICA-ALUMINA, AT A TEMPERATURE OF 400*-1000*F. UNTIL REACTION WITH LTHE HYDROXYL GROUPS IS COMPLETE, AS EVIDENCED BY CESSATION OF EVOLUTION OF BYPRODUCT VAPORS, SUBSEQUENTLY IMPREGNATING THE TREATED SUPPORT WITH A SOLUTION OF A PALLADIUM COMPOUND TO A PALLADIUM CONTENT OF 0.4-0.8% WT., AND ACTIVATING THE CATALYST BY REDUCTION WITH HYDROGEN AT 750*-975*F.
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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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |