Patent US2428761A successfully refreshed from Google Patents.
US4515682A
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Catalysis over activated high silica zeolites
Assignee: Mobil Oil AS
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Filing: 1984-02-17
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Granted: 1985-05-07
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Expires: 2004-02-17
Abstract
Abstract A process is provided for conducting organic compound conversion over a catalyst composition comprising a specially treated crystalline zeolite having a high initial silica-to-alumina mole ratio, said zeolite having been synthesized from a reaction mixture comprising a diamine as a cation source. The treatment of the zeolite material comprises the sequential steps of reacting the zeolite with a dilute hydrogen fluoride solution, contacting the hydrogen fluoride solution reacted material with aluminum chloride vapor, and then treating the aluminum chloride contacted material to convert it to hydrogen form.
Inventors
- 👤 Clarence D. Chang
- 👤 Joseph N. Miale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:30
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/703; B01J2229/00; B01J2229/10; B01J2229/18; B01J2229/30; B01J2229/37; B01J29/40; B01J29/65
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
141 words
A process for converting a feedstock comprising hydrocarbon compounds to conversion products comprising hydrocarbon compounds of lower molecular weight than feedstock hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a crystalline zeolite having an initial silica:alumina mole ratio greater than about 100:1 and having been synthesized from a reaction mixture comprising a diamine, said zeolite being treated by the squential steps of reacting said zeolite with a dilute aqueous solution of hydrogen fluoride of from about 0.1 to about 5 Normal at a temperature of from about 0° C. to about 30° C. for a time of less than about 60 minutes, contacting said hydrogen fluoride reacted zeolite with aluminum chloride vapor at a temperature of from about 100° C. to about 850° C., and converting said aluminum chloride contacted zeolite to hydrogen form.
Claim 2
Dependent Claim
141 words
A process for converting a feedstock comprising hydrocarbon compounds to conversion products comprising hydrocarbon compounds of lower molecular weight than feedstock hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a crystalline zeolite having an initial silica:alumina mole ratio greater than about 100:1 and having been synthesized from a reaction mixture comprising a diamine, said zeolite being treated by the squential steps of reacting said zeolite with a dilute aqueous solution of hydrogen fluoride of from about 0.1 to about 5 Normal at a temperature of from about 0° C. to about 30° C. for a time of less than about 60 minutes, contacting said hydrogen fluoride reacted zeolite with aluminum chloride vapor at a temperature of from about 100° C. to about 850° C., and converting said aluminum chloride contacted zeolite to hydrogen form.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein said zeolite has an initial silica:alumina mole ratio greater than about 500:1.
Claim 4
Dependent Claim
32 words
The process of claim 1 wherein said conversion of said aluminum chloride contacted zeolite to the hydrogen form comprises contact of said zeolite with a hydrogen ion precursor solution followed by calcination.
Claim 5
Dependent Claim
31 words
The process of claim 3 wherein said hydrogen ion precursor solution is a solution of an ammonium salt selected from the group consisting of ammonium nitrate, ammonium sulfate and ammonium chloride.
Claim 6
Dependent Claim
28 words
The process of claim 1 wherein said conversion of said aluminum chloride contacted zeolite to the hydrogen form comprises treatment of said zeolite by ammonolysis followed by calcination.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein said zeolite has the structure of ZSM 5, ZSM-11, ZSM-35 or ZSM-48.
Claim 8
Dependent Claim
61 words
The process of claim 1 wherein said conversion conditions include a temperature of from about 100° C. to about 800° C., a pressure of from about 0.1 atmosphere to about 200 atmospheres, a weight hourly space velocity of from about 0.08 hr -1 to about 2000 hr -1 and a hydrogen/feedstock hydrocarbon compound mole ratio of from 0 to about 100.
Claim 9
Dependent Claim
50 words
The process of claim 1 wherein said conversion conditions include a temperature of from about 300° C. to about 800° C., a pressure of from about 0.1 atmosphere to about 35 atmospheres and a weight hourly space velocity of from about 0.1 hr -1 to about 20 hr -1 .
Claim 10
Dependent Claim
16 words
The process of claim 1 wherein said catalyst composition further comprises a matrix material of alumina.
Claim 11
Dependent Claim
138 words
A process for converting a feedstock comprising hydrocarbon compounds to conversion products comprising hydrocarbon compounds of lower molecular weight than feedstock hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a crystalline zeolite having an initial silica:alumina mole ratio greater than 100:1 and the structure of zeolite ZSM-48, said crystalline zeolite having been treated by the sequential steps of reacting said zeolite with a dilute aqueous solution of hydrogen fluoride of from about 0.1 to about 5 Normal at a temperature of from about 0° C. to about 30° C. for a time of less than about 60 minutes, contacting said hydrogen fluoride reacted zeolite with aluminum chloride vapor at a temperature of from about 100° C. to about 850° C. , and converting said aluminum chloride contacted zeolite to hydrogen form.
Claim 12
Dependent Claim
138 words
A process for converting a feedstock comprising hydrocarbon compounds to conversion products comprising hydrocarbon compounds of lower molecular weight than feedstock hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a crystalline zeolite having an initial silica:alumina mole ratio greater than 100:1 and the structure of zeolite ZSM-48, said crystalline zeolite having been treated by the sequential steps of reacting said zeolite with a dilute aqueous solution of hydrogen fluoride of from about 0.1 to about 5 Normal at a temperature of from about 0° C. to about 30° C. for a time of less than about 60 minutes, contacting said hydrogen fluoride reacted zeolite with aluminum chloride vapor at a temperature of from about 100° C. to about 850° C. , and converting said aluminum chloride contacted zeolite to hydrogen form.
Claim 13
Dependent Claim
18 words
The process of claim 10 wherein said zeolite has an initial silica:alumina mole ratio greater than about 500:1.
Claim 14
Dependent Claim
32 words
The process of claim 10 wherein said conversion of said aluminum chloride contacted zeolite to the hydrogen form comprises contact of said zeolite with a hydrogen ion precursor solution followed by calcination.
Claim 15
Dependent Claim
31 words
The process of claim 12 wherein said hydrogen ion precursor solution is a solution of an ammonium salt selected from the group consisting of ammonium nitrate, ammonium sulfate and ammonium chloride.
Claim 16
Dependent Claim
28 words
The process of claim 10 wherein said conversion of said aluminum chloride contacted zeolite to the hydrogen form comprises treatment of said zeolite by ammonolysis followed by calcination.
Claim 17
Dependent Claim
61 words
The process of claim 10 wherein said conversion conditions include a temperature of from about 100° C. to about 800° C., a pressure of from about 0.1 atmosphere to about 200 atmospheres, a weight hourly space velocity of from about 0.08 hr -1 to about 2000 hr -1 and a hydrogen/feedstock hydrocarbon compound mole ratio of from 0 to about 100.
Claim 18
Dependent Claim
50 words
The process of claim 10 wherein said conversion conditions include a temperature of from about 300° C. to about 800° C., a pressure of from about 0.1 atmosphere to about 35 atmospheres and a weight hourly space velocity of from about 0.1 hr -1 to about 20 hr -1 .
Claim 19
Dependent Claim
16 words
The process of claim 10 wherein said catalyst composition further comprises a matrix material of alumina.
References Cited (Backward Citations)
US3297564A
Cited
US3524808A
Cited
US3707461A
Cited
US4438215A
Cited
US4435516A
Cited
US4444902A
Cited
US4427787A
Cited
US4427790A
Cited
US4427786A
Cited
US4427788A
Cited
US4427789A
Cited
US4443554A
Cited
US4461845A
Cited
US4427791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |