Patent US4110410A successfully refreshed from Google Patents.
US4110410A
Expired / Lapsed
US
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Oligomerization of olefins
Assignee: Honeywell UOP LLC
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Filing: 1977-06-22
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Granted: 1978-08-29
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Expires: 1997-06-22
Abstract
Abstract Olefinic hydrocarbons containing from 2 to about 6 carbon atoms are oligomerized by treatment with a heterogeneous oligomerization catalyst which has been prepared by heating a metal oxide, thereafter contacting the metal oxide with titanium tetrachloride vapor in a series of steps at progressively higher temperatures ranging from about 50 DEG to about 600 DEG C. and thereafter heating the impregnated metal oxide in contact with hydrogen gas at an elevated temperature in the range of from about 300 DEG to about 700 DEG C. to reduce the titanium to a valence state of less than +4.
Inventors
- 👤 Ji-Yong Ryu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:49
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2/22; B; B01; B01J; B01J27/00; B01J27/06; B01J27/08; B01J27/10; C07C2/74; C07C2523/00; C07C2523/08; C07C2527/00; C07C2527/06; C07C2527/135
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
A process for the oligomerization of an olefinic hydrocarbon which contains from 2 to about 6 carbon atoms which comprises oligomerizing said hydrocarbon at oligomerization conditions in the presence of a catalyst which has been prepared by heating a metal oxide which possesses surface hydroxyl groups at a temperature in the range of from about 400° C. to about 600° C., contacting said metal oxide with titanium tetrachloride vapor in a series of steps at progressively higher temperatures within the range of from about 50° C. to about 600° C. to deposit titanium tetrachloride on the metal oxide, and thereafter heating the impregnated metal oxide in contact with hydrogen gas at a temperature in the range of from about 300° C. to about 700° C. to reduce the titanium to a valence state of less than +4, and recovering the resultant oligomer.
Claim 2
Dependent Claim
142 words
A process for the oligomerization of an olefinic hydrocarbon which contains from 2 to about 6 carbon atoms which comprises oligomerizing said hydrocarbon at oligomerization conditions in the presence of a catalyst which has been prepared by heating a metal oxide which possesses surface hydroxyl groups at a temperature in the range of from about 400° C. to about 600° C., contacting said metal oxide with titanium tetrachloride vapor in a series of steps at progressively higher temperatures within the range of from about 50° C. to about 600° C. to deposit titanium tetrachloride on the metal oxide, and thereafter heating the impregnated metal oxide in contact with hydrogen gas at a temperature in the range of from about 300° C. to about 700° C. to reduce the titanium to a valence state of less than +4, and recovering the resultant oligomer.
Claim 3
Dependent Claim
42 words
The process as set forth in claim 1 in which said oligomerization reaction conditions include a temperature in the range of from about ambient to about 250° C. and a pressure in the range of from about atmospheric to about 100 atmospheres.
Claim 4
Dependent Claim
31 words
The process as set forth in claim 1 in which said metal oxide which possesses surface hydroxyl groups is an oxide of a metal of Group IIIA of the Periodic Table.
Claim 5
Dependent Claim
21 words
The process as set forth in claim 3 in which said metal oxide is a low density, high surface area gamma-alumina.
Claim 6
Dependent Claim
16 words
The process as set forth in claim 3 in which said metal oxide is gallium oxide.
Claim 7
Dependent Claim
16 words
The process as set forth in claim 3 in which said metal oxide is indium oxide.
Claim 8
Dependent Claim
15 words
The process as set forth in claim 1 in which said olefinic hydrocarbon is ethylene.
Claim 9
Dependent Claim
15 words
The process as set forth in claim 1 in which said olefinic hydrocarbon is propylene.
Claim 10
Dependent Claim
15 words
The process as set forth in claim 1 in which said olefinic hydrocarbon is butene-1.
Claim 11
Dependent Claim
15 words
Th process as set forth in claim 1 in which said olefinic hydrocarbon is butene-2.
References Cited (Backward Citations)
US3193596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |