US3962133A
Expired / Lapsed
US
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Graphite intercalation
Assignee: Mobil Oil AS
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Filing: 1974-12-12
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Granted: 1976-06-08
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Expires: 1994-12-12
Abstract
Abstract Intercalation of a Lewis acid fluoride in graphite is effected in the presence of gaseous fluorine. The reaction results in new compositions useful as catalysts and as atmospheric pressure containers for normally gaseous Lewis acid fluorides.
Inventors
- 👤 Paul G. Rodewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:18
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/10; B; B01; B01J; B01J27/00; B01J27/06; B01J27/08; B01J27/12; C01; C01B; C01B32/00; C01B32/20; C01B32/21; C01B32/22; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2/86; C07C2/861; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2778; C07C5/2786; C07C2521/00; C07C2521/18; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1213; C07C2527/133; C07C2527/14; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P20/582
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
97 words
A method of intercalating a Lewis acid fluoride in graphite which comprises contacting graphite with a Lewis acid fluoride, having a boiling point below about 300°C., of an element of Group II, IIIA, IV, V or VIB of the Periodic Table in the presence of fluorine at a temperature within the approximate range of 15° to 150°C for at least a period of time to effect a weight increase in the graphite, the relative amount of said Lewis acid fluoride and fluorine being between about 30 to 1 and about 2 to 1 on a weight basis.
Claim 2
Independent Claim
97 words
A method of intercalating a Lewis acid fluoride in graphite which comprises contacting graphite with a Lewis acid fluoride, having a boiling point below about 300°C., of an element of Group II, IIIA, IV, V or VIB of the Periodic Table in the presence of fluorine at a temperature within the approximate range of 15° to 150°C for at least a period of time to effect a weight increase in the graphite, the relative amount of said Lewis acid fluoride and fluorine being between about 30 to 1 and about 2 to 1 on a weight basis.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein the temperature is between about 20°C and about 40°C.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the Lewis acid fluoride is boron trifluoride.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein the Lewis acid fluoride is phosphorus pentafluoride.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein the Lewis acid fluoride is antimony pentafluoride.
Claim 7
Dependent Claim
18 words
The method of claim 1 wherein said period of time is between about 1/4 and about 24 hours.
Claim 8
Dependent Claim
18 words
The method of claim 1 wherein said period of time is between about 1 and about 10 hours.
Claim 9
Dependent Claim
32 words
The method of claim 1 wherein the fluorine is diluted with an inert gas such that the fluorine content of the diluted mixture is between about 1 and about 50 volume percent.
Claim 10
Dependent Claim
23 words
A composition consisting essentially of graphite having intercalated in the lattice thereof between about 5 and about 50 weight percent of boron trifluoride.
Claim 11
Dependent Claim
23 words
A composition consisting essentially of graphite having intercalated in the lattice thereof between about 5 and about 50 weight percent of boron trifluoride.
Claim 12
Dependent Claim
23 words
A composition consisting essentially of graphite having intercalated in the lattice thereof between about 5 and about 50 weight percent of phosphorus pentafluoride.
Claim 13
Dependent Claim
23 words
A composition consisting essentially of graphite having intercalated in the lattice thereof between about 5 and about 50 weight percent of phosphorus pentafluoride.
Claim 14
Dependent Claim
21 words
The composition of claim 9 wherein the intercalated amount of boron trifluoride is between about 10 and about 40 weight percent.
Claim 15
Dependent Claim
19 words
The composition of claim 10 wherein the intercalated amount of phosphorus pentafluoride is between about 10 and about 40.
References Cited (Backward Citations)
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Cited
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Cited
US3840566A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |