US4605810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Allene or alkyne treatment of olefin conversion catalysts
Assignee: Phillips Petroleum Co
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Filing: 1985-08-09
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Granted: 1986-08-12
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Expires: 2005-08-09
Abstract
Abstract Process for activation of tungsten on silica disproportionation catalyst by contacting the catalyst with at least one acetylenic compound is disclosed. In a specific embodiment, the acetylenic compound can be prepared by isomerization of an allene compound when contacted with magnesium oxide, either as a separate catalyst bed, or as part of the disproportionation catalyst system.
Inventors
- 👤 Robert L. Banks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:38
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/30
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
134 words
In a disproportionation process which comprises contacting at least one olefin from the group consisting of: acyclic mono- and polyenes having at least 3 up to 10 carbon atoms per molecule, and cycloalkyl and aryl derivatives thereof; cyclic mono- and polyenes having at least 4 up to 10 carbon atoms per molecule, and alkyl and aryl derivatives thereof; mixtures of two or more of the above olefins; and mixtures of ethylene with one or more of the above olefins capable of undergoing disproportionation with a tungsten oxide on silica disproportionation catalyst system under disproportionation conditions, the improvement comprising contacting said catalyst with an activating amount of at least one alkyne conforming to the formula: R--C.tbd.C--R wherein each R is independently H or a C 1 -C 6 carbon radical per mole of tungsten oxide.
Claim 2
Dependent Claim
134 words
In a disproportionation process which comprises contacting at least one olefin from the group consisting of: acyclic mono- and polyenes having at least 3 up to 10 carbon atoms per molecule, and cycloalkyl and aryl derivatives thereof; cyclic mono- and polyenes having at least 4 up to 10 carbon atoms per molecule, and alkyl and aryl derivatives thereof; mixtures of two or more of the above olefins; and mixtures of ethylene with one or more of the above olefins capable of undergoing disproportionation with a tungsten oxide on silica disproportionation catalyst system under disproportionation conditions, the improvement comprising contacting said catalyst with an activating amount of at least one alkyne conforming to the formula: R--C.tbd.C--R wherein each R is independently H or a C 1 -C 6 carbon radical per mole of tungsten oxide.
Claim 3
Dependent Claim
26 words
A process in accordance with claim 1 wherein said alkyne is selected from the group consisting of: acetylene, propyne, 2-butyne, 1-pentyne, 2-pentyne, 1-hexyne, 3-hexyne, and phenylacetylene.
Claim 4
Dependent Claim
29 words
A process in accordance with claim 1 wherein said disproportionation catalyst system is contacted with said alkyne by intermittent pulsed additions mixed with or concurrent with the olefin feed.
Claim 5
Dependent Claim
27 words
A process in accordance with claim 3 wherein said pulsed addition comprises adding about 0.1 to 20 moles of alkyne per mole of tungsten oxide per pulse.
Claim 6
Dependent Claim
16 words
A process in accordance with claim 3 wherein said disproportionation catalyst is associated with magnesium oxide.
Claim 7
Dependent Claim
45 words
A process in accordance with claim 5 wherein said alkyne is provided by the isomerization in the presence of said magnesium oxide of at least one allene having the formula: ##STR2## wherein each R' is independently H or a C 1 -C 6 carbon radical.
Claim 8
Dependent Claim
24 words
A process in accordance with claim 1 wherein said disproportionation catalyst system is contacted with said alkyne prior to introduction of the olefin feed.
Claim 9
Dependent Claim
28 words
A process in accordance with claim 7 wherein said alkyne is introduced in an amount ranging from 0.1 to 20 moles of alkyne per mole of tungsten oxide.
Claim 10
Dependent Claim
17 words
A process in accordance with claim 7 wherein said disproportionation catalyst system is associated with magnesium oxide.
Claim 11
Dependent Claim
45 words
A process in accordance with claim 9 wherein said alkyne is provided by the isomerization in the presence of said magnesium oxide of at least one allene having the formula: ##STR3## wherein each R' is independently H or a C 1 -C 6 carbon radical.
Claim 12
Dependent Claim
56 words
A process in accordance with claim 1 where said disproportionation catalyst system is selected from the group consisting of: WO 3 .SiO 2 /R 4 Sn, AgO.WO 3 .SiO 2 , OsO 4 .WO 3 .SiO 2 , WO 3 .SiO 2 /NbTe, WO 3 .SiO 2 /MoTe 2 , and WO 3 .SiO 2 /MgO.
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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) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |