US4524235A
Expired / Lapsed
US
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Olefin disproportionation and catalyst therefor
Assignee: Individual
•
Filing: 1984-09-10
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Granted: 1985-06-18
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Expires: 2004-09-10
Abstract
Abstract An improved olefin disproportionation catalyst produced by contacting an inorganic refractory oxide containing a catalytic amount of tungsten oxide or molybdenum oxide with a promoting amount of at least one elemental metal selected from zinc and manganese.
Inventors
- 👤 Robert L. Banks
- 👤 Simon G. Kukes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:44
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
78 words
A process for the disproportionation of olefins comprising contacting an olefin feed under suitable reaction conditions with a catalytic amount of a catalyst composition produced by contacting a refractory oxide containing a metal oxide selected from the group consisting of tungsten oxide and molybdenum oxide with a promoting amount of at least one elemental metal selected from the group consisting of zinc and manganese under conditions suitable for said metal to promote the activity of said metal oxide.
Claim 2
Dependent Claim
78 words
A process for the disproportionation of olefins comprising contacting an olefin feed under suitable reaction conditions with a catalytic amount of a catalyst composition produced by contacting a refractory oxide containing a metal oxide selected from the group consisting of tungsten oxide and molybdenum oxide with a promoting amount of at least one elemental metal selected from the group consisting of zinc and manganese under conditions suitable for said metal to promote the activity of said metal oxide.
Claim 3
Dependent Claim
23 words
A process according to claim 1 wherein said inorganic refractory oxide is selected from the group consisting of silica, alumina, and mixtures thereof.
Claim 4
Dependent Claim
43 words
A process according to claim 2 wherein said metal oxide consists essentially of tungsten oxide and the amount of tungsten oxide is equal to about 1 to about 15 weight percent of the combined weights of said tungsten oxide and said refractory oxide.
Claim 5
Dependent Claim
12 words
A process according to claim 3 wherein said refractory oxide comprises silica.
Claim 6
Dependent Claim
44 words
A process according to claim 4 wherein said elemental metal is employed in an amount in the range of about 0.5 to about 20 weight percent of the combined weights of the tungsten oxide and the silica prior to the addition of said metal.
Claim 7
Dependent Claim
13 words
A process according to claim 5 wherein said metal consists essentially of zinc.
Claim 8
Dependent Claim
39 words
A process according to claim 6 wherein the amount of zinc is in the range of 2 to 30 weight percent based on the weight of the supported metal oxide catalyst prior to the addition of the elemental zinc.
Claim 9
Dependent Claim
12 words
A process according to claim 7 wherein said olefin feed comprises propylene.
Claim 10
Dependent Claim
34 words
A process according to claim 8 wherein the amount of zinc is about 10 weight percent based on the weight of the supported metal oxide catalyst prior to the addition of the elemental zinc.
Claim 11
Dependent Claim
13 words
A process according to claim 5 wherein said metal consists essentially of manganese.
Claim 12
Dependent Claim
39 words
A process according to claim 10 wherein the amount of manganese is in the range of 2 to 30 weight percent based on the weight of the supported metal oxide catalyst prior to the addition of the elemental manganese.
Claim 13
Dependent Claim
12 words
A process according to claim 11 wherein said olefin feed comprises propylene.
References Cited (Backward Citations)
US3792106A
Cited
US3872180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |