US2611749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of an alumina-platinumcombined halogen catalyst
Assignee: Universal Oil Products Co
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Filing: 1948-09-04
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Granted: 1952-09-23
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Expires: 1968-09-04
Abstract
No abstract record available.
Inventors
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:26
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J37/00; B01J37/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A PROCESS FOR PREPARING A SUPPORTED PLATINUM CATALYST WHEREIN THE PLATINUM COMPONENT THEREOF IS EVENLY DISTRIBUTED IN A FINELY DIVIDED FORM ON THE EXPOSED SUPERFICIAL AREA OF THE SUPPORT WHICH COMPRISES COMPOSISTING FROM ABOUT 0.1% TO ABOUT 8% BY WEIGHT OF COMBINED HALOGEN WITH ALUMINA BY ADMIXING THE ALUMINA WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE HALOGEN COMPOUND, THEREBY FORMING A HALOGEN-CONTAINING ALUMINA SUPPORT, PRECIPITATING COLLOIDAL PLATINUM SULFIDE BY ADDING A SULFIDING AGENT TO A SOLUTION OF A WATER SOLUBLE PLATINUM COMPOUND IN AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 20 TO ABOUT 95% OF A WATER SOLUBLE ORGANIC SOLVENT, COMPOSITING SAID PLATINUM SULFIDE WITH SAID HALOGEN CONTAINING ALUMINA SUPPORT IN AN AMOUNT TO FORM A FINAL CATALYST CONTAINING FROM ABOUT 0.01% LTO ABOUT 1% BY WIEGHT OF PLATINUM, AND THEREAFTER CALCINING THE RESULTING SUPPORT CONTAINING SAID PLATINUM SULFIDE AT A TEMPERATURE OF FROM ABOUT 400* TO ABOUT 650* C.
Claim 2
Dependent Claim
149 words
A PROCESS FOR PREPARING A SUPPORTED PLATINUM CATALYST WHEREIN THE PLATINUM COMPONENT THEREOF IS EVENLY DISTRIBUTED IN A FINELY DIVIDED FORM ON THE EXPOSED SUPERFICIAL AREA OF THE SUPPORT WHICH COMPRISES COMPOSISTING FROM ABOUT 0.1% TO ABOUT 8% BY WEIGHT OF COMBINED HALOGEN WITH ALUMINA BY ADMIXING THE ALUMINA WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE HALOGEN COMPOUND, THEREBY FORMING A HALOGEN-CONTAINING ALUMINA SUPPORT, PRECIPITATING COLLOIDAL PLATINUM SULFIDE BY ADDING A SULFIDING AGENT TO A SOLUTION OF A WATER SOLUBLE PLATINUM COMPOUND IN AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 20 TO ABOUT 95% OF A WATER SOLUBLE ORGANIC SOLVENT, COMPOSITING SAID PLATINUM SULFIDE WITH SAID HALOGEN CONTAINING ALUMINA SUPPORT IN AN AMOUNT TO FORM A FINAL CATALYST CONTAINING FROM ABOUT 0.01% LTO ABOUT 1% BY WIEGHT OF PLATINUM, AND THEREAFTER CALCINING THE RESULTING SUPPORT CONTAINING SAID PLATINUM SULFIDE AT A TEMPERATURE OF FROM ABOUT 400* TO ABOUT 650* C.
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) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |