Patent US4465893A successfully refreshed from Google Patents.
US4465893A
Expired / Lapsed
US
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Oxidative condensation of natural gas or methane into gasoline range hydrocarbons
Assignee: Individual
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Filing: 1982-08-25
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Granted: 1984-08-14
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Expires: 2002-08-25
Abstract
Abstract This invention relates to a new process for the direct conversion of natural gas or methane into gasoline range hydrocarbons (i.e., synthetic transportation fuels or lower olefins) via catalytic condensation using superacid catalysts.
Inventors
- 👤 George A. Olah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:32
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; C07C2/82; C07C2/84; C07C2521/00; C07C2521/16; C07C2521/18; C07C2527/00; C07C2527/02; C07C2527/03; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; C07C2527/125; C07C2527/133; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/08; C07C2531/10; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
30 words
A process for the heterogeneous gas-phase conversion of methane into gasoline-range hydrocarbons by condensing a gaseous feed comprising methane or natural gas in the presence of a solid superacid catalyst.
Claim 2
Dependent Claim
30 words
A process for the heterogeneous gas-phase conversion of methane into gasoline-range hydrocarbons by condensing a gaseous feed comprising methane or natural gas in the presence of a solid superacid catalyst.
Claim 3
Dependent Claim
33 words
A process according to claim 1 wherein the gaseous feed is condensed in the presence of an oxidizing agent selected from air, oxygen, oxygen-ozone mixtures, sulfur, selenium, sulfur trioxide, nitrogen oxides and halogens.
Claim 4
Dependent Claim
35 words
A process according to claim 1 wherein the solid superacid catalyst is selected from higher valency Lewis Acid halides of metals of groups IV, V or VI of the Periodic Table, supported on a carrier.
Claim 5
Dependent Claim
23 words
A process according to claim 3 wherein the higher valency Lewis Acid halide is selected from tantalum pentafluoride, niobium pentafluoride and antimony pentafluoride.
Claim 6
Dependent Claim
18 words
A process according to claim 3 wherein the carrier is a chalconite, graphite, fluorinated graphite or aluminum fluoride.
Claim 7
Dependent Claim
12 words
A process according to claim 5, wherein the chalconite carrier is fluoridated.
Claim 8
Dependent Claim
68 words
A process according to claim 1 wherein the solid superacid catalyst is composed of a strong Bronsted acid component selected from hydrogen fluoride, fluorosulfuric acid, perfluoroalkanesulfonic acids of 1 to 18 carbon atoms deposited on a suitable carrier, perfluorinated polymeric resinsulfonic acids copolymers of perfluorovinylsulfonic acid and tetrafluoroethylene or trifluorochloroethylene complexed with a Lewis Acid fluoride of metal of groups IV, V or VI of the Periodic Table.
Claim 9
Dependent Claim
20 words
A process according to claim 1 wherein the solid superacid catalyst is antimony pentafluoride deposited on graphite or fluorinated graphite.
Claim 10
Dependent Claim
24 words
A process according to claim 1 wherein the solid superacid catalyst is tantalum pentafluoride deposited on aluminum trifluoride, fluoridated alumina, graphite or fluorinated graphite.
Claim 11
Dependent Claim
31 words
A process according to claim 1 wherein the gaseous feed is condensed at a temperature between about 15 and 250 degrees centigrade and a pressure of about 1 to 150 atmospheres.
Claim 12
Dependent Claim
31 words
A process according to claim 1 wherein the gaseous feed is condensed at a temperature between about 50 and 250 degrees centigrade and a pressure of about 1 to 150 atmospheres.
Claim 13
Dependent Claim
30 words
A process according to claim 1 wherein the methane or natural gas is condensed in admixture with at least one lower olefin in the C 2 to C 4 range.
Claim 14
Dependent Claim
18 words
A process according to claim 1 wherein the methane or natural gas is condensed in admixture with acetylene.
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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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |