US4287048A
Expired / Lapsed
US
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Cracking process with catalyst of combined zeolites
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1980-03-17
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Granted: 1981-09-01
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Expires: 2000-03-17
Abstract
Abstract A hydrocarbon cracking catalyst comprises an ultrastable Y-type crystalline zeolite, a small pore crystalline zeolite such as mordenite, an inorganic oxide matrix and, optionally, a porous inert component. The cracking catalyst has a high activity and selectivity for the production of high octane naphtha fractions from higher boiling point hydrocarbonaceous oils. Catalytic cracking processes utilizing the catalyst are also provided.
Inventors
- 👤 Elroy M. Gladrow
- 👤 William E. Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:13
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/80; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; B01J29/08; B01J29/084; B01J29/40
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
24 words
A catalytic cracking process which comprises contacting a hydrocarbonaceous feed at catalytic cracking conditions in the absence of added hydrogen with a catalyst comprising:
Claim 2
Dependent Claim
24 words
A catalytic cracking process which comprises contacting a hydrocarbonaceous feed at catalytic cracking conditions in the absence of added hydrogen with a catalyst comprising:
Claim 3
Dependent Claim
53 words
(a) an ultrastable Y-type crystalline aluminosilicate zeolite having less than about 1 weight percent rare earth metals, calculated as the elemental metal, based on the zeolite; (b) a small pore crystalline aluminosilicate zeolite selected from the group consisting of erionite, mordenite, zeolite A, chabazite and offretite; and (c) a catalytic inorganic oxide matrix.
Claim 4
Dependent Claim
53 words
(a) an ultrastable Y-type crystalline aluminosilicate zeolite having less than about 1 weight percent rare earth metals, calculated as the elemental metal, based on the zeolite; (b) a small pore crystalline aluminosilicate zeolite selected from the group consisting of erionite, mordenite, zeolite A, chabazite and offretite; and (c) a catalytic inorganic oxide matrix.
Claim 5
Dependent Claim
39 words
The process of claim 1 wherein said catalyst additionally comprises a porous inorganic oxide having initially a surface area greater than about 20 square meters per gram and a pore volume greater than about 0.25 cubic centimeter per gram.
Claim 6
Dependent Claim
45 words
The process of claim 2 wherein said porous inorganic oxide has initially a surface area greater than about 100 square meters per gram and at least 0.2 cubic centimeter per gram of its pore volume in pores having diameters ranging from 90 to 200 Angstroms.
Claim 7
Dependent Claim
26 words
The process of claim 1 wherein the weight ratio of said ultrastable Y-type zeolite to said small pore zeolite ranges from about 0.5:1 to about 10:1.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein said small pore crystalline zeolite is mordenite.
Claim 9
Dependent Claim
14 words
The process of claim 5 wherein said mordenite is the hydrogen form of mordenite.
Claim 10
Dependent Claim
24 words
The process of claim 2 wherein said porous inorganic oxide is selected from the group consisting of alumina, titania, zirconia, magnesia and mixtures thereof.
Claim 11
Dependent Claim
13 words
The process of claim 2 wherein said porous inorganic oxide comprises porous alumina.
Claim 12
Dependent Claim
23 words
The process of claim 2 wherein said porous inorganic oxide comprises alumina stablized with from about 0.5 to about 6 weight percent silica.
Claim 13
Dependent Claim
10 words
The process of claim 1 wherein said matrix comprises silica-alumina.
Claim 14
Dependent Claim
22 words
The process of claim 1 wherein said catalyst comprises from about 5 to about 40 weight percent of said ultrastable Y-type zeolite.
Claim 15
Dependent Claim
30 words
The process of claim 1 wherein said catalytic cracking conditions include a temperature ranging from about 750° to 1300° F. and a pressure ranging from about 0 to 100 psig.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |