US4609769A
Expired / Lapsed
US
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Olefin conversion
Assignee: Phillips Petroleum Co
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Filing: 1984-02-15
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Granted: 1986-09-02
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Expires: 2004-02-15
Abstract
Abstract Olefins are converted into other olefins having different numbers of carbon atoms by contact with a catalyst comprising a silica support containing tungsten oxide and a promoting amount of at least one titaniferous agent and activated under conditions suitable for the titaniferous agent to promote the activity of tungsten oxide and silica for the disproportionation and isomerization reaction.
Inventors
- 👤 Simon Kukes
- 👤 Robert L. Banks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:40
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/063; B01J23/00; B01J23/16; B01J23/24; B01J23/30; C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2562; C07C2521/00; C07C2521/06; C07C2521/08; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
A process for disproportionating and isomerizing olefins comprising contacting at least one feed olefin having at least three carbon atoms per molecule under suitable reaction conditions which convert the feed olefin into other olefins having different numbers of carbon atoms with a catalytically effective amount of a catalyst composition consisting essentially of silica and tungsten oxide promoted with an effective promoting amount of a titaniferous agent.
Claim 2
Dependent Claim
66 words
A process for disproportionating and isomerizing olefins comprising contacting at least one feed olefin having at least three carbon atoms per molecule under suitable reaction conditions which convert the feed olefin into other olefins having different numbers of carbon atoms with a catalytically effective amount of a catalyst composition consisting essentially of silica and tungsten oxide promoted with an effective promoting amount of a titaniferous agent.
Claim 3
Dependent Claim
21 words
A process according to claim 1 wherein said promoted catalyst is activated by heating to an elevated temperature under calcination conditions.
Claim 4
Dependent Claim
45 words
A process according to claim 2 wherein said tungsten oxide is in the range of about 0.1 to about 30 percent of the combined weights of metal oxide and silica and said calcined catalyst is further heated at an elevated temperature in a reducing atmosphere.
Claim 5
Dependent Claim
33 words
A process according to claim 3 wherein said olefin comprises propylene or 1-hexene and the reaction is carried out at a temperature in the range of about 20° C. to about 600° C.
Claim 6
Dependent Claim
43 words
A process according to claim 4 wherein the titaniferous agent is employed in an amount in the range of about 0.1 to about 20 weight percent of the titanium component calculated as titanium dioxide based on the weight of the tungsten oxide-silica combination.
Claim 7
Dependent Claim
43 words
A process according to claim 1 wherein the titaniferous agent is employed in an amount in the range of about 0.1 to about 20 weight percent of the titanium component calculated as titanium dioxide based on the weight of the tungsten oxide-silica combination.
Claim 8
Dependent Claim
16 words
A process according to claim 6 wherein said titaniferous agent is titanium(IV) citrate or bis(triethanolamine)titanium diisopropoxide.
Claim 9
Dependent Claim
12 words
A process according to claim 1 wherein said feed olefin contains ethylene.
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) | 1989-09-01 | 1990-03-03 | 1990-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-01 | 1994-03-03 | 1994-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-01 | 1998-03-03 | 1998-09-02 | $7700.00 | Window Closed / Lapsed |