US3024294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and catalyst for isomerizing normal pentane and/or normal hexane
Assignee: Pure Oil Co
•
Filing: 1959-12-21
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Granted: 1962-03-06
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Marcellus J Geerts
- 👤 Norman L Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:17
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791; B; B01; B01J; B01J37/00; B01J37/22; B01J37/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
A METHOD OF PREPARING A SULFUR-RESISTANT ISOMERIZATION CATALYST WHICH COMPRISES REACTING A CATALYST SUPPORT MATERIAL CONSISTING ESSENTIALLY OF PREDRIED SILICA-ALUMINA, CONTAINING 50-95% WT. SILICA, WITH ANHYDROUS GASEOUS HYDROGEN FLUORIDE AT A TEMPERATURE OF 100*-1000* F., EXCEPTING THE RANGE FROM ABOUT 650*-850* F., UNTIL THE SILICA-ALUMINA CONTAINS 1-10% WT. COMBINED FLUORINE THEN IMPREGNATION THE FLUORIDED SUPPORT MATERIAL WITH A HYDROGENATION AGENT, AND REDUCING THE CATALYST WITH HYDROGEN AT ABOUT 750*-975* F.
Claim 2
Independent Claim
70 words
A METHOD OF PREPARING A SULFUR-RESISTANT ISOMERIZATION CATALYST WHICH COMPRISES REACTING A CATALYST SUPPORT MATERIAL CONSISTING ESSENTIALLY OF PREDRIED SILICA-ALUMINA, CONTAINING 50-95% WT. SILICA, WITH ANHYDROUS GASEOUS HYDROGEN FLUORIDE AT A TEMPERATURE OF 100*-1000* F., EXCEPTING THE RANGE FROM ABOUT 650*-850* F., UNTIL THE SILICA-ALUMINA CONTAINS 1-10% WT. COMBINED FLUORINE THEN IMPREGNATION THE FLUORIDED SUPPORT MATERIAL WITH A HYDROGENATION AGENT, AND REDUCING THE CATALYST WITH HYDROGEN AT ABOUT 750*-975* F.
Claim 3
Dependent Claim
15 words
AN ISOMERIZATION CATALYST PREPARED IN ACCORDANCE WITH CLAIM 1, CHARACTERIZED BY RESISTANCE TO SULFUR POISONING.
Claim 4
Dependent Claim
66 words
A METHOD OF ISOMERIZING A C5-C6 NORMAL PARAFFIN HYDROCARBON WITHOUT SUBSTANTIAL DECLINE IN YIELD RESULTING FROM SULFUR COMPOUNDS IN THE FEED, WHICH COMPRISES PASSING HYDROGEN AND A NORMAL C5-C6 PARAFFIN HYDROCARBON CONTAINING 0-10 P.P.M. SULFUR, AT A TEMPERATURE OF ABOUT 700*-790* F. SUFFICIENT TO EFFECT ISOMERIZATION, A PRESSURE OF ABOUT 100-1000 P.S.I.G., AND A HYDROGEN/HYDROCARBON MOL RATIO OF ABOUT 0.5-5.0 OVER THE CATALYST OF CLAIM 14.
References Cited (Backward Citations)
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US2913421A
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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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |