US2849382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silica-alumina-chromium fluoride catalytic compositions; their preparation; and their use in hydrocarbon conversions
Assignee: Sunoco Inc
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Filing: 1955-06-07
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Granted: 1958-08-26
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Expires: 1975-06-07
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Hirschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:25
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G11/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A CATALYST FOR THE CONVERSION OF HYDROCARBONS CONSISTING ESSENTIALLY OF A SYNTHETIC SILICA-ALUMINA COMPOSITION IMPREGNATED WITH WITH FROM 4 TO 19% BY WEIGHT, BASED ON THE FINAL COMPOSITION, OF CHROMIUM FLUORIDE, THE RADIUS OF THE PORES OF SAID CATALYST BEING FROM 135 TO 300 A., AND THE SURFACE AREA OF SAID CATALYST BEING FROM 20 TO 90 SQUARE METERS PER GRAM.
Claim 2
Dependent Claim
61 words
A CATALYST FOR THE CONVERSION OF HYDROCARBONS CONSISTING ESSENTIALLY OF A SYNTHETIC SILICA-ALUMINA COMPOSITION IMPREGNATED WITH WITH FROM 4 TO 19% BY WEIGHT, BASED ON THE FINAL COMPOSITION, OF CHROMIUM FLUORIDE, THE RADIUS OF THE PORES OF SAID CATALYST BEING FROM 135 TO 300 A., AND THE SURFACE AREA OF SAID CATALYST BEING FROM 20 TO 90 SQUARE METERS PER GRAM.
Claim 3
Dependent Claim
100 words
PROCESS FOR THE PREPARATION OF A CATALYST FOR USE IN THE CONVERSION OF HYDROCARBONS WHICH COMPRISES IMPREGNATING A SYNTHETIC SILICA-ALUMINA COMPOSITION HAVING AN ACTIVITY INDEX OF FROM 30 TO 50 WITH AN AQUEOUS SOLUTION OF A WATER SOLUBLE CHELATE COMPOUND OF CHROMIUM FLORIDE, DRYING THE RESULTING COMPOSITION AND CALCINING THE DRIED COMPOSITION IN CONTACT WITH AIR AT A TEMMPERATURE OF FROM ABOUT 500*C. TO ABOUT 750*C., WHEREIN THE CONCENTRATION OF THE CHELATE COMPOUND OF CHROMIUM FLUORIDE IN SAID AQUEOUS SOLUTION IS SUFFICIENT TO GIVE A CONCENTRATION OF CHROMIUM FLUORIDE OF FROM 4 TO 19% BY WEIGHT IN THE FINAL COMPOSTION.
Claim 4
Dependent Claim
100 words
PROCESS FOR THE PREPARATION OF A CATALYST FOR USE IN THE CONVERSION OF HYDROCARBONS WHICH COMPRISES IMPREGNATING A SYNTHETIC SILICA-ALUMINA COMPOSITION HAVING AN ACTIVITY INDEX OF FROM 30 TO 50 WITH AN AQUEOUS SOLUTION OF A WATER SOLUBLE CHELATE COMPOUND OF CHROMIUM FLORIDE, DRYING THE RESULTING COMPOSITION AND CALCINING THE DRIED COMPOSITION IN CONTACT WITH AIR AT A TEMMPERATURE OF FROM ABOUT 500*C. TO ABOUT 750*C., WHEREIN THE CONCENTRATION OF THE CHELATE COMPOUND OF CHROMIUM FLUORIDE IN SAID AQUEOUS SOLUTION IS SUFFICIENT TO GIVE A CONCENTRATION OF CHROMIUM FLUORIDE OF FROM 4 TO 19% BY WEIGHT IN THE FINAL COMPOSTION.
Claim 5
Dependent Claim
89 words
PROCESS FOR CONVERTING A HYDROCARBON FRACTION BOILING ABOVE THE GASOLINE RANGE WHICH COMPRISES CONTACTING SAID FRACTION WITH A CATALYST CONSISTING ESSENTIALLY OF FROM 75 TO 90% SILICA, FROM 6 TO 21% BY WEIGHT ALUMINA AND FROM 4 TO 19% BY WEIGHT CHROMIUM FLUORIDE UNDER CATALYTIC CONVERSION CONDITIONS WHEREBY SAID HYDROCARBON FRACTION IS CONVERTED TO GASOLINE OF HIGH OCTANE RATING, THE RADIUS OF THE PORES OF SAID CATALYST BEING FROM 135 TO 300 A. AND THE SURFACE AREA OF SAID CATALYST BEING FROM 20 TO 90 SQUARE METERS PER GRAM.
Claim 6
Dependent Claim
89 words
PROCESS FOR CONVERTING A HYDROCARBON FRACTION BOILING ABOVE THE GASOLINE RANGE WHICH COMPRISES CONTACTING SAID FRACTION WITH A CATALYST CONSISTING ESSENTIALLY OF FROM 75 TO 90% SILICA, FROM 6 TO 21% BY WEIGHT ALUMINA AND FROM 4 TO 19% BY WEIGHT CHROMIUM FLUORIDE UNDER CATALYTIC CONVERSION CONDITIONS WHEREBY SAID HYDROCARBON FRACTION IS CONVERTED TO GASOLINE OF HIGH OCTANE RATING, THE RADIUS OF THE PORES OF SAID CATALYST BEING FROM 135 TO 300 A. AND THE SURFACE AREA OF SAID CATALYST BEING FROM 20 TO 90 SQUARE METERS PER GRAM.
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |