Patent US4500418A successfully refreshed from Google Patents.
US4500418A
Expired / Lapsed
US
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Catalysis over activated inorganic oxides
Assignee: Mobil Oil AS
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Filing: 1983-11-16
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Granted: 1985-02-19
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Expires: 2003-11-16
Abstract
Abstract A process is provided for conducting organic compound conversion over a catalyst comprising alumina and/or gallia which has been treated by a method which comprises contact with ammonium or boron fluoride reagent, contact with a particular aqueous ammonium exchange solution, and thereafter calcination.
Inventors
- 👤 Joseph N. Miale
- 👤 Clarence D. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:36
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/22; B01J37/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 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 comprising an inorganic oxide material selected from the group consisting of alumina and gallia treated by a method comprising contacting said material with a fluoride reagent selected from the group consisting of ammonium fluoride and boron fluoride at a temperature of from about 0° C. to about 100° C., contacting said fluoride reagent contacted material with an aqueous ammonium exchange solution and thereafter calcining said material at a temperature of from about 200° C. to about 600° C.
Claim 2
Dependent Claim
112 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 comprising an inorganic oxide material selected from the group consisting of alumina and gallia treated by a method comprising contacting said material with a fluoride reagent selected from the group consisting of ammonium fluoride and boron fluoride at a temperature of from about 0° C. to about 100° C., contacting said fluoride reagent contacted material with an aqueous ammonium exchange solution and thereafter calcining said material at a temperature of from about 200° C. to about 600° C.
Claim 3
Dependent Claim
24 words
The process of claim 1 wherein said aqueous ammonium exchange solution is selected from the group consisting of ammonium hydroxide and an ammonium salt.
Claim 4
Dependent Claim
23 words
The process of claim 2 wherein said ammonium salt is selected from the group consisting of ammonium nitrate, ammonium sulfate and ammonium chloride.
Claim 5
Dependent Claim
31 words
The process of claim 1 wherein said inorganic oxide material is calcined prior to contact with the fluoride reagent at a temperature of from about 200° C. to about 600° C.
Claim 6
Dependent Claim
22 words
The process of claim 1 wherein said fluoride reagent contacting is at a temperature of from about ambient to about 50° C.
Claim 7
Dependent Claim
10 words
The process of claim 1 wherein said alumina is gamma-alumina.
Claim 8
Dependent Claim
16 words
The process of claim 1 wherein said inorganic oxide material is in the form of beads.
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 200 hr -1 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |