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US4902847A
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Method for producing olefin oligomers using a modified mordenite based catalyst
Assignee: IFP Energies nouvelles
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Filing: 1988-09-16
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Granted: 1990-02-20
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Expires: 2008-09-16
Abstract
Abstract Preparation of oligomers of C2 to C8 olefins useful in gasoline, yet fuel and diesel fuel is disclosed. The oligomerization is catalyzed by a modified mordenite in the H or NH4+ to form which has been sequentially treated with steam and an acid.
Inventors
- 👤 Bernard Juguin
- 👤 Francis Raatz
- 👤 Christine Travers
- 👤 Germain Martino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:20
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; C; C10; C10G; C10G50/00; B01J2229/00; B01J2229/10; B01J2229/16; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
93 words
A method for producing oligomers, in which at least one mono-olefin having 2 to 8 carbon atoms is placed in contact with a mordenite which has been obtained by the following series of operations: (a) subjecting non-dealuminized mordenite substantially in the H or NH 4 + form to at least one treatment with steam at a temperature of 450° C. to 600° C. at a partial steam pressure above 60%, and (b) treating the resulting product, at least once, with an acid, said acid being used at a concentration of 0.5 and 20N.
Claim 2
Independent Claim
93 words
A method for producing oligomers, in which at least one mono-olefin having 2 to 8 carbon atoms is placed in contact with a mordenite which has been obtained by the following series of operations: (a) subjecting non-dealuminized mordenite substantially in the H or NH 4 + form to at least one treatment with steam at a temperature of 450° C. to 600° C. at a partial steam pressure above 60%, and (b) treating the resulting product, at least once, with an acid, said acid being used at a concentration of 0.5 and 20N.
Claim 3
Dependent Claim
17 words
A method according to claim 1, wherein a C 3 or C 4 olefin cut is treated.
Claim 4
Dependent Claim
19 words
A method according to claim 1, wherein the sequence of operations (a) and (b) is repeated at least once.
Claim 5
Dependent Claim
33 words
A method according to claim 1, wherein the mordenite in H or NH 4 + form is derived from ionic exchange of a sodium mordenite of atomic ratio Si/Al of 5 to 15.
Claim 6
Dependent Claim
23 words
A method according to claim 1, wherein the steam treatment is carried out at 550°-600° C. at a partial steam pressure above 85%.
Claim 7
Dependent Claim
45 words
A method according to claim 1, wherein steps (a) and (b) are repeated until there is obtained in the final product an atomic ratio Si/Al of 20 to 60 and a mesh volume between 2755 A 3 and 2730 A 3 (1 A=10 -10 m).
Claim 8
Dependent Claim
17 words
A method according to claim 1, wherein said acid is hydrochloric acid, sulfuric acid or nitric acid.
Claim 9
Dependent Claim
16 words
A method according to claim 1, wherein said acid has a pK A value below 4.
Claim 10
Dependent Claim
38 words
A method according to claim 1, wherein said acid treatment is performed with a volume ratio of solution expressed in cm 3 to the weight of dry solid at 100° C. expressed as grams (V/P) higher than 3.
Claim 11
Dependent Claim
21 words
A method according to claim 1, wherein the atomic ratio Si/Al of the mordenite subsequent to treatment in (a) is 10-100.
Claim 12
Dependent Claim
18 words
A method according to claim 1, wherein the ratio of crystallinity of the mordenite is greater than 80%.
Claim 13
Dependent Claim
18 words
A method according to claim 1, wherein the ratio of crystallinity of the mordenite is greater than 90%.
Claim 14
Dependent Claim
18 words
A method according to claim 10, wherein the ratio of crystallinity of the mordenite is greater than 80%.
Claim 15
Dependent Claim
34 words
A method according to claim 1, wherein the acid concentration is 0.5-5N where the atomic ratio Si/Al of the product of step (a) is 10-40 and 5-20N where the ratio is greater than 40.
Claim 16
Dependent Claim
35 words
A method according to claim 13, wherein the acid concentration is 0.5-5N where the atomic ratio of Si/Al of the product of step (a) is 10-40 and 5-20N where the ratio is greater than 40.
Claim 17
Dependent Claim
19 words
A method according to claim 2, wherein the olefin cut contains normal olefins, whereby said normal olefins are oligomerized.
Claim 18
Dependent Claim
69 words
A process for the preparation of a mordenite catalyst, comprising: (a) subjecting non-dealuminized mordenite substantially in the H or NH 4 + form to at least one treatment with steam at a temperature of 450° C. to 600° C. at a partial steam pressure above 60%, and (b) treating the resulting product, at least once, with an acid, said acid being used at a concentration of 0.5 and 20N.
Claim 19
Dependent Claim
69 words
A process for the preparation of a mordenite catalyst, comprising: (a) subjecting non-dealuminized mordenite substantially in the H or NH 4 + form to at least one treatment with steam at a temperature of 450° C. to 600° C. at a partial steam pressure above 60%, and (b) treating the resulting product, at least once, with an acid, said acid being used at a concentration of 0.5 and 20N.
References Cited (Backward Citations)
US3591488A
Cited
US4454367A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-02-19 | 1993-08-21 | 1994-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-19 | 1997-08-21 | 1998-02-20 | $3760.00 | Window Closed / Lapsed |
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