US4513099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin metathesis and catalyst
Assignee: Phillips Petroleum Co
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Filing: 1984-02-27
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Granted: 1985-04-23
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Expires: 2004-02-27
Abstract
Abstract Olefins are converted into other olefins having different numbers of carbon atoms by contact with a catalyst produced by combining a metal, such as tungsten or a tungsten compound, with a halosilane by adding either water or silica to the suspension of metal and halosilane and then heating to activate the catalyst.
Inventors
- 👤 Simon G. Kukes
- 👤 Robert L. Banks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:31
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/32; B01J23/36
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
59 words
A composition suitable for the disproportionation of olefins comprising silicon and at least one metal selected from tungsten, molybdenum, and rhenium produced by (a) combining the metal or metal compound with a halosilane compound (b) adding either water or silica to (a), and (c) heating (b) to activate and form a metal/silicon-containing catalyst active for the disproportionation of olefins.
Claim 2
Dependent Claim
59 words
A composition suitable for the disproportionation of olefins comprising silicon and at least one metal selected from tungsten, molybdenum, and rhenium produced by (a) combining the metal or metal compound with a halosilane compound (b) adding either water or silica to (a), and (c) heating (b) to activate and form a metal/silicon-containing catalyst active for the disproportionation of olefins.
Claim 3
Dependent Claim
49 words
A composition according to claim 1 wherein (b) comprises the addition of sufficient water to (a) to hydrolize and polymerize said halosilane and said heating in (c) is carried out under calcination additions comprising an elevated temperature and a sufficient amount of oxygen-containing gas to calcine and activate catalyst.
Claim 4
Dependent Claim
47 words
A composition according to claim 1 wherein (b) silica (SiO 2 ) is combined with (a) and (c) the product of (b) is heated in (c) under conditions including an inert gas and an elevated temperature sufficient to form a metal/silicon catalyst effective for disproportionation of olefins.
Claim 5
Dependent Claim
20 words
A composition according to claim 1 wherein the halosilane is a halodisilane or halodisiloxane compound and said metal is tungsten.
Claim 6
Dependent Claim
17 words
A composition according to claim 4 wherein tungsten or tungsten hexachloride is combined with hexachlorodisilane in (a).
Claim 7
Dependent Claim
34 words
A composition according to claim 1 wherein the amount of metal, calculated as the metal oxide, in the catalyst ranges from about 0.1 to about 40 weight percent based on total weight of catalyst.
Claim 8
Dependent Claim
21 words
A composition according to claim 1 which additionally includes at least one other metal active for disproportionation in addition to tungsten.
Claim 9
Dependent Claim
18 words
A composition according to claim 7 which additionally contains a refractory inorganic oxide support material other than silica.
Claim 10
Dependent Claim
50 words
A composition according to claim 4 wherein (b) comprises the addition of sufficient amount of water to (a) to hydrolize and polymerize said halosilane and said heating in (c) is carried out under calcination conditions comprising an elevated temperature and a sufficient amount of oxygen-containing gas to activate said catalyst.
Claim 11
Dependent Claim
50 words
A composition according to claim 4 wherein silica (SiO 2 ) is combined with (a) and in (b), the product of (b) is heated in (c) under conditions comprising an elevated temperature in the presence of an inert gas sufficient to form a tungsten/silicon catalyst effective for disproportionation of olefins.
Claim 12
Dependent Claim
26 words
A composition according to claim 2 wherein said temperature of calcination is at least about 200° C. and is carried out in the presence of air.
Claim 13
Dependent Claim
30 words
A composition according to claim 3 wherein the heating in (c) is carried out at a temperature of at least about 200° C. in the presence of an inert gas.
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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) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |