US4289606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon cracking with mixture of zeolites Y and ZSM-5
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1980-03-19
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Granted: 1981-09-15
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Expires: 2000-03-19
Abstract
Abstract A hydrocarbon cracking catalyst comprises an ultrastable Y-type crystalline zeolite, a small pore crystalline ZSM-type zeolite, 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
2026-10-29 08:58
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/80; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; B01J29/08; B01J29/084; B01J29/40; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
65 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: (a) an ultrastable Y-type crystalline alumino-silicate 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 ZSM-5 type zeolite; and (c) a catalytic inorganic oxide matrix.
Claim 2
Dependent Claim
65 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: (a) an ultrastable Y-type crystalline alumino-silicate 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 ZSM-5 type zeolite; and (c) a catalytic inorganic oxide matrix.
Claim 3
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 4
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 5
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 1:1 to about 20:1.
Claim 6
Dependent Claim
16 words
The process of claim 1 wherein said small pore crystalline zeolite is a ZSM-5 type zeolite.
Claim 7
Dependent Claim
19 words
The process of claim 5 wherein said ZSM-5 type zeolite is the hydrogen form of the ZSM-5 type zeolite.
Claim 8
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 9
Dependent Claim
13 words
The process of claim 2 wherein said porous inorganic oxide comprises porous alumina.
Claim 10
Dependent Claim
23 words
The process of claim 2 wherein said porous inorganic oxide comprises alumina stabilized with from about 0.5 to about 6 weight percent silica.
Claim 11
Dependent Claim
10 words
The process of claim 1 wherein said matrix comprises silica-alumina.
Claim 12
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 13
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.
References Cited (Backward Citations)
US3764520A
Cited
US3769202A
Cited
US3402996A
Cited
US3702886A
Cited
US3804747A
Cited
US3758403A
Cited
US3925195A
Cited
US3894934A
Cited
US3871993A
Cited
US4164465A
Cited
US4137152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |