US2667461A
Expired / Lapsed
US
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Method of making platinumcontaining catalysts
Assignee: Standard Oil Development Co
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Filing: 1950-12-21
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Granted: 1954-01-26
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Expires: 1970-12-21
Abstract
No abstract record available.
Inventors
- 👤 Walter R F Guyer
- 👤 John P Thorn
- 👤 Arundale Erving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:23
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; C; C07; C07C; C07C15/00; B01J37/00; B01J37/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
PROCESS OF MANUFACTURING PLATINUM-CONTAINING REFORMING CATALYSTS WHICH COMPRISES MIXING A CRYSTALLINE "ACTIVATED ALUMINA" WITH AN AQUEOUS HF SOLUTION TO FROM A PASTE USING SUFFICIENT SOLUTION TO BE THE EQUIVALENT OF 0.25% TO 3.0% OF HF ON ALUMINA BY WEIGHT, MIXING THE PASTE AND THEN PERMITTING THE MIXTURE TO STAND AT ROOM TEMPERATURE TO PERMIT REACTION BETWEEN THE ALUMINA AND THE HF, DRYING THE PASTE AND THEN MIXING IT WITH A SOLUTION OF A PLATINUM COMPOUND TO FORM A PASTE SAID AMOUNT OF SOLUTION BEING SUFFICIENT TO PROVIDE ABOUT 0.1 TO 2.0% BY WEIGHT OF PLATINUM ON THE ALUMINA, THEN TREATING THE PASTE WITH H2S FOR AN EXTENDED PERIOD OF TIME TO UNIFORMLY DEPOSIT THE PLATINUM ON THE ALUMINA BASE, PERMITTING THE SULFIDED MIXTURE TO STAND AT ROOM TEMPERATURE FOR AN EXTEDNED PERIOD OF TIME SUFFICIENT TO ALLOW THE DESIRED REACTION, THEN DRYING, THE SULFIDE MIXTURE AND AFTER DRYING, CALCINING THE MIXTURE AT AN ELEVATED TEMPERATURE AND THEN TREATING THE CALCINED MIXTURE WITH HYDROGEN TO REDUCE THE PLATINUM TO THE METALLIC STATE.
Claim 2
Dependent Claim
171 words
PROCESS OF MANUFACTURING PLATINUM-CONTAINING REFORMING CATALYSTS WHICH COMPRISES MIXING A CRYSTALLINE "ACTIVATED ALUMINA" WITH AN AQUEOUS HF SOLUTION TO FROM A PASTE USING SUFFICIENT SOLUTION TO BE THE EQUIVALENT OF 0.25% TO 3.0% OF HF ON ALUMINA BY WEIGHT, MIXING THE PASTE AND THEN PERMITTING THE MIXTURE TO STAND AT ROOM TEMPERATURE TO PERMIT REACTION BETWEEN THE ALUMINA AND THE HF, DRYING THE PASTE AND THEN MIXING IT WITH A SOLUTION OF A PLATINUM COMPOUND TO FORM A PASTE SAID AMOUNT OF SOLUTION BEING SUFFICIENT TO PROVIDE ABOUT 0.1 TO 2.0% BY WEIGHT OF PLATINUM ON THE ALUMINA, THEN TREATING THE PASTE WITH H2S FOR AN EXTENDED PERIOD OF TIME TO UNIFORMLY DEPOSIT THE PLATINUM ON THE ALUMINA BASE, PERMITTING THE SULFIDED MIXTURE TO STAND AT ROOM TEMPERATURE FOR AN EXTEDNED PERIOD OF TIME SUFFICIENT TO ALLOW THE DESIRED REACTION, THEN DRYING, THE SULFIDE MIXTURE AND AFTER DRYING, CALCINING THE MIXTURE AT AN ELEVATED TEMPERATURE AND THEN TREATING THE CALCINED MIXTURE WITH HYDROGEN TO REDUCE THE PLATINUM 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) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |