US4508618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Increasing the octane number of natural gasoline with trifluoromethanesulfonic acid
Assignee: El Paso Products Co
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Filing: 1984-06-04
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Granted: 1985-04-02
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Expires: 2004-06-04
Abstract
Abstract Natural gasoline of low octane value derived from natural gas is upgraded to higher octane value by means of catalyst consisting essentially of trifluoromethanesulfonic acid at temperatures between about 80 DEG C. and about 120 DEG C., and preferably between about 100 DEG C. and about 120 DEG C.
Inventors
- 👤 George A. Olah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:28
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0215; B01J31/0225; B01J31/0227; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A process for upgrading an aromatics-containing natural gasoline of low octane value derived from natural gas which comprises contacting said gasoline containing about 5 wt. % or less aromatics in the absence of added olefin under reaction conditions comprising a temperature in the range between about 100° C. and about 120° C. and a contact time between about 10 minutes and about 4 hours with a catalyst consisting essentially of trifluoromethanesulfonic acid and thereafter recovering an upgraded natural gasoline product of higher octane value.
Claim 2
Dependent Claim
84 words
A process for upgrading an aromatics-containing natural gasoline of low octane value derived from natural gas which comprises contacting said gasoline containing about 5 wt. % or less aromatics in the absence of added olefin under reaction conditions comprising a temperature in the range between about 100° C. and about 120° C. and a contact time between about 10 minutes and about 4 hours with a catalyst consisting essentially of trifluoromethanesulfonic acid and thereafter recovering an upgraded natural gasoline product of higher octane value.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein the contact time is between about 15 minutes and about 2 hours.
Claim 4
Dependent Claim
25 words
The process of claim 1 wherein the contacting is carried out under a pressure at least sufficient to maintain the gasoline substantially in liquid phase.
Claim 5
Dependent Claim
20 words
The process of claim 3 wherein said pressure is in the range from about 50 psig to about 100 psig.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein the catalyst to hydrocarbon volumetric ratio is between about 0.1:1 and about 2:1.
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) | 1988-04-01 | 1988-10-01 | 1989-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-01 | 1992-10-01 | 1993-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-01 | 1996-10-01 | 1997-04-02 | $7700.00 | Window Closed / Lapsed |