Patent US2920053A successfully refreshed from Google Patents.
US2920053A
Expired / Lapsed
US
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Method of preparing a hydrocarbon conversion catalyst
Assignee: Standard Oil Co
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Filing: 1955-12-30
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Granted: 1960-01-05
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Glenn M Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:24
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J21/00; B01J21/02; B01J21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD OF PREPARING A PLATINUM-ALUMINA CATALYST, WHICH METHOD COMPRISES FORMING AN ALUMINA HYDROSOL BY PEPTIZING HYDROUS ALUMINA WITH ABOUT 1 TO 10 WEIGHT PERCENT OF A WATER-SOLUBLE ALIPHATIC CARBOXYLIC ACID HAVING AN INOIZATION CONSTANT BELOW ABOUT 10-3 AT 25*C., HEATING SAID HYDROSOL TO A TEMPERATURE IN THE RANGE OF 200 TO 950*F. IN THE SUBSTANTIALLY COMPLETE ABSENCE OF OXIDIZING SUBSTANCES AND IN AN ATMOSPHERE SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, NITROGEN, FLUE GAS, STEAM AND MIXTURES THEREOF, SAID HEATING BEING CONTINUED IN SAID TEMPERATURE RANGE OF AT LEAST FOUR HOURS AND UNTIL THE LUMINA IS SUBSTANTIALLY DRY AND THE ACID CONTENT THEREOF IS REDUCED TO LESS THAN .5 WEIGHT PERCENT CALCULATED AS ACETIC ACID, COMMINGLING A PLATINUM COMPOUND WITH THE ALUMINA BEFORE THE ALUMINA IS FINALLY CALCINED, AND FINALLY CALCINING THE DRIED PLATINUM-CONTAINING MATERIAL.
Claim 2
Independent Claim
136 words
THE METHOD OF PREPARING A PLATINUM-ALUMINA CATALYST, WHICH METHOD COMPRISES FORMING AN ALUMINA HYDROSOL BY PEPTIZING HYDROUS ALUMINA WITH ABOUT 1 TO 10 WEIGHT PERCENT OF A WATER-SOLUBLE ALIPHATIC CARBOXYLIC ACID HAVING AN INOIZATION CONSTANT BELOW ABOUT 10-3 AT 25*C., HEATING SAID HYDROSOL TO A TEMPERATURE IN THE RANGE OF 200 TO 950*F. IN THE SUBSTANTIALLY COMPLETE ABSENCE OF OXIDIZING SUBSTANCES AND IN AN ATMOSPHERE SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, NITROGEN, FLUE GAS, STEAM AND MIXTURES THEREOF, SAID HEATING BEING CONTINUED IN SAID TEMPERATURE RANGE OF AT LEAST FOUR HOURS AND UNTIL THE LUMINA IS SUBSTANTIALLY DRY AND THE ACID CONTENT THEREOF IS REDUCED TO LESS THAN .5 WEIGHT PERCENT CALCULATED AS ACETIC ACID, COMMINGLING A PLATINUM COMPOUND WITH THE ALUMINA BEFORE THE ALUMINA IS FINALLY CALCINED, AND FINALLY CALCINING THE DRIED PLATINUM-CONTAINING MATERIAL.
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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |