US4642407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methanol conversion using reactivated zeolite
Assignee: Mobil Oil AS
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Filing: 1985-11-12
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Granted: 1987-02-10
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Expires: 2005-11-12
Abstract
Abstract A process is provided for converting oxygenates to hydrocarbons over catalyst prepared by a method for reactivating a catalyst composition comprising a crystalline zeolite material having a silicon/aluminum atomic ratio of at least about 2, said catalyst composition having been deactivated by contact with steam. The catalyst preparation method involves contacting said steam-deactivated catalyst composition with an aluminum compound at elevated temperature, and contacting said aluminum compound contacted catalyst composition with an aqueous acid solution.
Inventors
- 👤 Ralph M. Dessau
- 👤 George T. Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:03
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/90
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
127 words
A process for converting a feedstock comprising organic compounds selected from the group consisting of alcohol, carbonyl, ether and mixtures thereof to conversion product comprising hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a crystalline zeolite material having a silicon/aluminum atomic ratio of at least about 2, said catalyst composition having been deactivated by contact with steam and reactivated by the steps of contacting said steam-deactivated catalyst composition with an aluminum compound vapor at a temperature of from about 100° C. to about 850° C., and thereafter contacting said aluminum compound contacted catalyst composition with an aqueous acid solution of from about 0.001 molar to about 10 molar at a temperature of from about 20° C. to about 100° C.
Claim 2
Dependent Claim
127 words
A process for converting a feedstock comprising organic compounds selected from the group consisting of alcohol, carbonyl, ether and mixtures thereof to conversion product comprising hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a crystalline zeolite material having a silicon/aluminum atomic ratio of at least about 2, said catalyst composition having been deactivated by contact with steam and reactivated by the steps of contacting said steam-deactivated catalyst composition with an aluminum compound vapor at a temperature of from about 100° C. to about 850° C., and thereafter contacting said aluminum compound contacted catalyst composition with an aqueous acid solution of from about 0.001 molar to about 10 molar at a temperature of from about 20° C. to about 100° C.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein said crystalline zeolite material has a silicon/aluminum atomic ratio greater than 10.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein said aqueous acid solution is from about 0.1 molar to about 2 molar.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein said aluminum compound is aluminum halide.
Claim 6
Dependent Claim
30 words
The process of claim 1 which comprises the additional step of calcining said acid solution contacted catalyst composition at a temperature of from about 200° C. to about 600° C.
Claim 7
Dependent Claim
37 words
The process of claim 5 which comprises the additional step of calcining said aluminum compound contacted catalyst composition at a temperature of from about 200° C. to about 600° C. prior to said acid solution contacting step.
Claim 8
Dependent Claim
35 words
The process of claim 1 wherein said aluminum compound contacting step temperature is from about 100° C. to about 500° C., and said aqueous acid solution is from about 0.1 molar to about 1 molar.
Claim 9
Dependent Claim
46 words
The process of claim 1 wherein said crystalline zeolite material is selected from the group consisting of large pore structure zeolites exhibiting a Constraint Index of less than about 1 and intermediate pore structure zeolites exhibiting a Constraint Index of from about 1 to about 12.
Claim 10
Dependent Claim
37 words
The process of claim 1 wherein said crystalline zeolite material is selected from the group consisting of those having the structures of ZSM-5, ZSM-11, ZSM-5/ZSM-11 intermediate, ZSM-12, ZSM-20, ZSM-23, ZSM-35, ZSM-38, ZSM-48, zeolite Y and zeolite Beta.
Claim 11
Dependent Claim
19 words
The process of claim 1 wherein said catalyst composition is a composite of said zeolite material and a matrix.
Claim 12
Dependent Claim
10 words
The process of claim 10 wherein said matrix is alumina.
Claim 13
Dependent Claim
16 words
The process of claim 1 wherein said acid solution is an aqueous solution of hydrochloric acid.
Claim 14
Dependent Claim
50 words
The process of claim 1 wherein said conversion conditions include a temperature of from about 275° C. to about 600° C., a pressure of from about 0.5 atmosphere to about 50 atmospheres and a liquid hourly space velocity of from about 0.5 hr -1 to about 100 hr -1 .
Claim 15
Dependent Claim
10 words
The process of claim 1 wherein said alcohol is methanol.
Claim 16
Dependent Claim
130 words
A process for converting feedstock comprising organic compounds selected from the group consisting of alcohol, carbonyl, ether and mixtures thereof to conversion product comprising hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a crystalline zeolite material having the structure of ZSM-5 and a silicon/aluminum atomic ratio greater than about 10, said catalyst composition having been deactivated by contact with steam and reactivated by the steps of contacting said steam-deactivated catalyst composition with an aluminum compound vapor at a temperature of from about 100° C. to about 850° C., and thereafter contacting said aluminum compound contacted catalyst composition with an aqueous acid solution of from about 0.001 molar to about 10 molar at a temperature of from about 20° C. to about 100° C.
Claim 17
Dependent Claim
130 words
A process for converting feedstock comprising organic compounds selected from the group consisting of alcohol, carbonyl, ether and mixtures thereof to conversion product comprising hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a crystalline zeolite material having the structure of ZSM-5 and a silicon/aluminum atomic ratio greater than about 10, said catalyst composition having been deactivated by contact with steam and reactivated by the steps of contacting said steam-deactivated catalyst composition with an aluminum compound vapor at a temperature of from about 100° C. to about 850° C., and thereafter contacting said aluminum compound contacted catalyst composition with an aqueous acid solution of from about 0.001 molar to about 10 molar at a temperature of from about 20° C. to about 100° C.
Claim 18
Dependent Claim
19 words
The process of claim 15 wherein said aqueous acid solution is from about 0.1 molar to about 2 molar.
Claim 19
Dependent Claim
12 words
The process of claim 15 wherein said aluminum compound is aluminum halide.
Claim 20
Dependent Claim
30 words
The process of claim 15 which comprises the additional step of calcining said acid solution contacted catalyst composition at a temperature of from about 200° C. to about 600° C.
Claim 21
Dependent Claim
37 words
The process of claim 18 which comprises the additional step of calcining said aluminum compound contacted catalyst composition at a temperature of from about 200° C. to about 600° C. prior to said acid solution contacting step.
Claim 22
Dependent Claim
35 words
The process of claim 15 wherein said aluminum compound contacting step temperature is from about 100° C. to about 500° C., and said aqueous acid solution is from about 0.1 molar to about 1 molar.
Claim 23
Dependent Claim
19 words
The process of claim 15 wherein said catalyst composition is a composite of said zeolite material and a matrix.
Claim 24
Dependent Claim
10 words
The process of claim 21 wherein said matrix is alumina.
Claim 25
Dependent Claim
16 words
The process of claim 15 wherein said acid solution is an aqueous solution of hydrochloric acid.
References Cited (Backward Citations)
US31919A
Cited
US3702886A
Cited
US4306106A
Cited
USRE31919E
Cited
US4477582A
Cited
US4478950A
Cited
US4517075A
Cited
US4435516A
Cited
US4444902A
Cited
US4530756A
Cited
US4458024A
Cited
US4440630A
Cited
US4538016A
Cited
US4538014A
Cited
US4427789A
Cited
US4540841A
Cited
US4540840A
Cited
US4427787A
Cited
US4427788A
Cited
US4500421A
Cited
US4538015A
Cited
US4500419A
Cited
US4500420A
Cited
US4512876A
Cited
US4427786A
Cited
US4427790A
Cited
US4500422A
Cited
US4444900A
Cited
US4515682A
Cited
US4443554A
Cited
US4563435A
Cited
US4461845A
Cited
US4559131A
Cited
US4559315A
Cited
US4524140A
Cited
US4468475A
Cited
US4427791A
Cited
US4500418A
Cited
US4526880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |