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US4150065A
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Olefin isomerization using alkali metal-graphite intercalate catalyst
Assignee: Phillips Petroleum Co
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Filing: 1977-07-21
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Granted: 1979-04-17
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Expires: 1997-07-21
Abstract
Abstract A method for shifting the double bond in an aliphatic 1-olefin containing more than three carbon atoms in which the 1-olefin is contacted with a catalyst comprising an alkali metal selected from potassium, rubidium, and cesium intercalated in a graphite or graphitized carbon black.
Inventors
- 👤 Jesse R. Harris
- 👤 Marvin M. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:17
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2556
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
A method for isomerizing aliphatic 1-olefins represented by the formula ##STR2## where R is selected from alkyl groups containing from 2 to about 13 carbon atoms, said method comprising contacting at a temperature in the range of about 25° C. to about 150° C. said 1-olefin with a catalyst comprising an alkali metal selected from the group consisting of potassium, rubidium, and cesium said metal intercalated in a graphite or graphitized carbon black thereby maintaining a low trans/cis ratio in isomerized product.
Claim 2
Independent Claim
82 words
A method for isomerizing aliphatic 1-olefins represented by the formula ##STR2## where R is selected from alkyl groups containing from 2 to about 13 carbon atoms, said method comprising contacting at a temperature in the range of about 25° C. to about 150° C. said 1-olefin with a catalyst comprising an alkali metal selected from the group consisting of potassium, rubidium, and cesium said metal intercalated in a graphite or graphitized carbon black thereby maintaining a low trans/cis ratio in isomerized product.
Claim 3
Dependent Claim
23 words
A method of claim 1 wherein reaction conditions comprise a reaction pressure in the range of about 0.5 atmospheres to about 50 atmospheres.
Claim 4
Dependent Claim
25 words
A method of claim 2 wherein the weight hourly space velocity of the 1-olefin feedstock is in the range of about 0.02 to about 20.
Claim 5
Dependent Claim
23 words
A method of claim 1 wherein the catalyst comprises about 2 to about 6 moles of graphite compound per mole of alkali metal.
Claim 6
Dependent Claim
27 words
A method of claim 4 wherein the catalyst comprises about 8 moles of graphite to 1 mole of potassium and 1-butene is converted to trans-2-butene and cis-2-butene.
Claim 7
Dependent Claim
27 words
A method of claim 4 wherein the catalyst comprises about 36 moles of graphite to 1 mole of potassium and 1-butene is converted to trans-2-butene and cis-2-butene.
Claim 8
Dependent Claim
13 words
A method of claim 4 wherein the catalyst comprises potassium and acetylene black.
Claim 9
Dependent Claim
25 words
A method of claim 1 wherein the contacting is carried out at a temperature in the range of about 100° C. to about 150° C.
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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |