US4078011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective hydrogenation of dienes using nickel/aluminum sulfide catalyst
Assignee: Shell USA Inc
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Filing: 1977-04-22
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Granted: 1978-03-07
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Expires: 1997-04-22
Abstract
Abstract A process for the selective hydrogenation of dienes present in a C 3-6 mixed hydrocarbon stream is disclosed wherein the hydrocarbon stream is contacted with added hydrogen in the presence of a catalyst comprising about 1 to 30% by weight nickel on an aluminum sulfide support.
Inventors
- 👤 Peter W. Glockner
- 👤 J. David Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:27
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C; C07; C07C; C07C7/00; C07C7/148; C07C7/163; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A process of selectively hydrogenating dienes present in a mixed hydrocarbon stream composed essentially of hydrocarbons in the range of 3-6 carbon atoms, said process comprising contacting said mixed hydrocarbon stream with added hydrogen at a temperature of between about 150° F and about 500° F and a pressure of about 1 to about 1000 atmospheres in the presence of a catalyst comprising about 1 to about 30% by weight nickel on an aluminum sulfide support.
Claim 2
Dependent Claim
76 words
A process of selectively hydrogenating dienes present in a mixed hydrocarbon stream composed essentially of hydrocarbons in the range of 3-6 carbon atoms, said process comprising contacting said mixed hydrocarbon stream with added hydrogen at a temperature of between about 150° F and about 500° F and a pressure of about 1 to about 1000 atmospheres in the presence of a catalyst comprising about 1 to about 30% by weight nickel on an aluminum sulfide support.
Claim 3
Dependent Claim
90 words
A process according to claim 1 wherein said catalyst is prepared by: a. contacting an aluminum sulfide support with a nickel complex capable of decomposition to nickel metal under anhydrous conditions in the presence of an aprotic solvent; b. heating the solution from step (a) under refluxing conditions for between about 1 hour and about 10 hours; c. recovering the resulting nickel/aluminum sulfide catalyst from the solution; and d. calcining the nickel/aluminum sulfide catalyst at a temperature of between about 500° F and about 1000° F in an inert atmosphere.
Claim 4
Dependent Claim
65 words
A process according to claim 2 wherein said aluminum sulfide support is prepared by heating a solution of a trialkyl aluminum having 1 to 5 carbon atoms in an aprotic solvent with a stoichiometric amount of hydrogen sulfide under anhydrous conditions at a temperature of between about 100° F and about 400° F and a pressure of between about 100 psig and about 1000 psig.
Claim 5
Dependent Claim
11 words
A process according to claim 1 wherein said diene is isoprene.
Claim 6
Dependent Claim
36 words
A process according to claim 2 wherein said nickel complex is selected from the group consisting of nickel acetylacetonate, nickel octoate, bis-salicylaldoxime nickel, bis-salicylaldehyde nickel, bis-cyclooctadiene nickel and nickel chloride-tetrahydrofuran complex, bis(π-allyl)nickel chloride, and bis(tetrahydrofuran)nickel dibromide.
Claim 7
Dependent Claim
13 words
A process according to claim 5 wherein said nickel complex is nickel acetylacetonate.
Claim 8
Dependent Claim
12 words
A process according to claim 2 wherein said aprotic solvent is toluene.
Claim 9
Dependent Claim
19 words
A process according to claim 3 wherein said trialkyl aluminum is triethyl aluminum and said aprotic solvent is toluene.
References Cited (Backward Citations)
US2402493A
Cited
US3223652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |