US4628138A
Expired / Lapsed
US
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Catalyst and process for oligomerization of ethylene
Assignee: Ashland LLC
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Filing: 1985-09-20
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Granted: 1986-12-09
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Expires: 2005-09-20
Abstract
Abstract An improved heterogeneous catalyst effective to catalyze the oligomerization of ethylene is formed by hydrogenating bis(η 5 -cyclopentadienyl) nickel (nickelocene) onto an omega zeolite support in the presence of a small, but effective amount of a promoter. The promoters are oxides of nickel, iron or copper and mixtures thereof. The catalyst is particularly effective in terms of selectivity and reactivity in catalyzing the formation of 1-butene from ethylene.
Inventors
- 👤 Kenneth W. Barnett
- 👤 Mary J. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:36
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/32; C07C2/34; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/72; B01J29/76; B01J29/7623; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/70; C07C2531/00; C07C2531/16; C07C2531/22
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
108 words
A method of oligomerizing an olefin comprising: contacting said olefin with a nickel-omega zeolite catalyst at a pressure, temperature and for a time effective to cause oligomerization of said olefin; said catalyst comprising a nickelocene compound reduced onto an omega zeolite support in the presence an effective amount of a promoter; wherein the nickelocene compound is selected from the group consisting of (R a -η 5 cyclopentadienyl) (cyclopentadienyl) Ni and bis(R a -η 5 cyclopentadienyl) Ni wherein R represents C 1 -C 10 alkyl and "a" represents 0-5; and wherein the promoter is selected from the group consisting of an oxide of copper, nickel, iron and mixtures thereof.
Claim 2
Independent Claim
108 words
A method of oligomerizing an olefin comprising: contacting said olefin with a nickel-omega zeolite catalyst at a pressure, temperature and for a time effective to cause oligomerization of said olefin; said catalyst comprising a nickelocene compound reduced onto an omega zeolite support in the presence an effective amount of a promoter; wherein the nickelocene compound is selected from the group consisting of (R a -η 5 cyclopentadienyl) (cyclopentadienyl) Ni and bis(R a -η 5 cyclopentadienyl) Ni wherein R represents C 1 -C 10 alkyl and "a" represents 0-5; and wherein the promoter is selected from the group consisting of an oxide of copper, nickel, iron and mixtures thereof.
Claim 3
Dependent Claim
23 words
The method claimed in claim 1 wherein said olefin is selected from the group consisting of ethylene and mixtures of ethylene and propylene.
Claim 4
Dependent Claim
30 words
The method claimed in claim 2 wherein the weight percentage of the nickelocene compound based on the weight of omega zeolite is from about 0.1 to about 10 weight percent.
Claim 5
Dependent Claim
29 words
The method claimed in claim 3 wherein the weight percent of promoter based on the weight of the nickelocene compound ranges from about 2 to about 50 weight percent.
Claim 6
Dependent Claim
19 words
The method claimed in claim 2 wherein said the nickelocene compound is reduced onto said omega zeolite by hydrogenation.
Claim 7
Dependent Claim
25 words
The method claimed in claim 4 wherein said promoter is selected from the group consisting of ferric oxide, cubric oxide, nickel oxide and mixtures thereof.
Claim 8
Dependent Claim
14 words
The method claimed in claim 2 wherein said nickelocene compound is bis(η 5 cyclopentadienyl)Ni.
Claim 9
Dependent Claim
28 words
The method claimed in claim 7 wherein said pressure effective to cause oligomerization is from about 150 pounds per square inch to about 1,000 pounds per square inch.
Claim 10
Dependent Claim
21 words
The method claimed in claim 8 wherein said temperature effective to cause oligomerization is from about 20° to about 70° C.
Claim 11
Dependent Claim
21 words
The method claimed in claim 9 wherein said time effective to cause oligomerization is from about 1 to about 60 minutes.
Claim 12
Dependent Claim
21 words
The method claimed in claim 9 wherein said temperature effective to cause oligomerization is from about 25° to about 40° C.
Claim 13
Dependent Claim
21 words
The method claimed in claim 10 wherein said time effective to cause olifomerization is from about 5 to about 20 minutes.
Claim 14
Dependent Claim
49 words
The method claimed in claim 2 wherein said zeolite has the following general chemical composition ______________________________________
(a) Chemical composition anhydrous basis
______________________________________
Al.sub.2 O.sub.3 16.3 wt percent
SiO.sub.2 75.7 wt percent
Na.sub.2 O 6.5 wt percent
SiO.sub.2 /Al.sub.2 O.sub.3
molar ratio 7.7
Na.sub.2 O/Al.sub.2 O.sub.3
molar ratio 0.6
______________________________________
Claim 15
Dependent Claim
49 words
The method claimed in claim 2 wherein said zeolite has the following general chemical composition ______________________________________
(a) Chemical Composition Anhydrous Basis
______________________________________
Al.sub.2 O.sub.3 18.8 wt percent
SiO.sub.2 78.9 wt percent
Na.sub.2 O 0.68 wt percent
SiO.sub.2 /Al.sub.2 O.sub.3
7.1 molar ratio
Na.sub.2 O/Al.sub.2 O.sub.3
0.06 molar ratio
______________________________________
Claim 16
Dependent Claim
18 words
The method claimed in claim 1 wherein said olefin is reacted in the presence of an inert diluent.
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| 3.5 Years (Year 4) | 1989-12-08 | 1990-06-09 | 1990-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-08 | 1994-06-09 | 1994-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-08 | 1998-06-09 | 1998-12-09 | $7700.00 | Window Closed / Lapsed |