US4368141A
Expired / Lapsed
US
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Olefin disproportionation and catalyst therefor
Assignee: Phillips Petroleum Co
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Filing: 1981-06-24
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Granted: 1983-01-11
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Expires: 2001-06-24
Abstract
Abstract A novel disproportionation catalyst comprising the product resulting from the combination of elemental sulfur and a disproportionation catalyst consisting essentially of a refractory oxide containing molybdenum oxide or tungsten oxide.
Inventors
- 👤 Semyon Kukes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:24
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J27/00; B01J27/02; B01J37/00; B01J37/20
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
48 words
A method of preparing a disproportionation catalyst comprising admixing elemental sulfur with a catalyst consisting essentially of a refractory oxide containing a metal oxide selected from the group consisting of molybdenum oxide and tungsten oxide and activating the catalyst by heating in the presence of an inert gas.
Claim 2
Independent Claim
48 words
A method of preparing a disproportionation catalyst comprising admixing elemental sulfur with a catalyst consisting essentially of a refractory oxide containing a metal oxide selected from the group consisting of molybdenum oxide and tungsten oxide and activating the catalyst by heating in the presence of an inert gas.
Claim 3
Dependent Claim
22 words
A method according to claim 1 wherein said inorganic refractory oxide is selected from the group of silica, alumina, and mixtures thereof.
Claim 4
Dependent Claim
41 words
A method according to claim 2 wherein said metal oxide is in the range of about 1 to about 10 percent of the combined weight of said metal oxide and said refractory oxide prior to the addition of the elemental sulfur.
Claim 5
Dependent Claim
44 words
A method according to claim 3 wherein the elemental sulfur is employed in an amount in the range of about 0.01 to about 5 weight percent based on the weight of the metal oxide-refractory oxide combination prior to the addition of the elemental sulfur.
Claim 6
Dependent Claim
21 words
A method according to claim 4 wherein said metal oxide is WO 3 and said refractory oxide is SiO 2 .
Claim 7
Dependent Claim
44 words
A method according to claim 5 wherein said elemental sulfur is employed in an amount in the range of about 0.01 to about 1 weight percent based on the weight of the metal oxide-refractory oxide combination prior to the addition of the elemental sulfur.
Claim 8
Dependent Claim
25 words
A method according to claim 6 wherein said catalyst is activated by heating at a temperature in the range of 550° C. to 650° C.
Claim 9
Dependent Claim
46 words
A method according to claim 7 wherein said elemental sulfur is placed on top of a bed of the starting catalyst and said sulfur is admixed with the catalyst as a result of an inert gas which flows through the sulfur and then through the catalyst.
Claim 10
Dependent Claim
21 words
A method according to claim 4 wherein said metal oxide is MoO 3 and said refractory oxide is SiO 2 .
Claim 11
Dependent Claim
44 words
A method according to claim 9 wherein said elemental sulfur is employed in an amount in the range of about 0.01 to about 1 weight percent based on the weight of the metal oxide-refractory oxide combination prior to the addition of the elemental sulfur.
Claim 12
Dependent Claim
25 words
A method according to claim 10 wherein said catalyst is activated by heating at a temperature in the range of 550° C. to 650° C.
Claim 13
Dependent Claim
46 words
A method according to claim 11 wherein said elemental sulfur is placed on top of a bed of the starting catalyst and said sulfur is admixed with the catalyst as a result of an inert gas which flows through the sulfur and then through the catalyst.
Claim 14
Dependent Claim
11 words
A composition prepared in accordance with any one of claims 1-12.
Claim 15
Dependent Claim
32 words
A process for the disproportionation of olefins comprising contacting said olefins under suitable reaction conditions with a catalytic amount of a catalyst composition prepared in accordance with a method of claims 1-12.
Claim 16
Dependent Claim
26 words
A process according to claim 14 wherein said disproportionation is carried out at a temperature in the range of about 20° C. to about 600° C.
Claim 17
Dependent Claim
12 words
A process according to claim 15 wherein said olefin reactant comprises propylene.
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) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |