US4477336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid dealuminated Y-zeolite and cracking process employing the same
Assignee: HARSHAW/FILTROL PARTNERSHIP A PARTNERSHIP OF
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Filing: 1983-07-11
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Granted: 1984-10-16
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Expires: 2003-07-11
Abstract
Abstract Cracking of hydrocarbons with a mixture of acid dealuminated, rare earth metal exchanged Y-zeolite having a SiO2/Al2O3 molar ratio of more than about 6 and not more than about 300, and non-dealuminated rare earth metal exchanged Y-zeolite and a matrix.
Inventors
- 👤 Julius Scherzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:33
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084; B01J29/80; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
153 words
In the process of catalytically cracking hydrocarbons undercracking conditions in the presence of a zeolite-containing catalyst, the improvement which comprises employing for the catalytic cracking of hydrocarbons a zeolite composition consisting of a mixture of dealuminated, rare earth metal exchanged Y-zeolites and nondealuminated rare earth metal exchanged Y-zeolites and a matrix, wherein the catalyst composition contains about 30% by weight of Y-zeolite mixture, calculated on the volatile free basis and wherein the quantity of the dealuminated Y-zeolite incorporated in the mixture is in the range of about 10% by weight to about 99% by weight, the dealuminated Y-zeolite being characterized by a total silica-to-alumina (SiO 2 /Al 2 O 3 ) molar ratio of more than about 6 and not more than about 300, a sodium content, expressed as Na 2 O on a volatile-free basis of less than about 0.5% by weight and an a o of less than about 24.4 Angstroms.
Claim 2
Dependent Claim
153 words
In the process of catalytically cracking hydrocarbons undercracking conditions in the presence of a zeolite-containing catalyst, the improvement which comprises employing for the catalytic cracking of hydrocarbons a zeolite composition consisting of a mixture of dealuminated, rare earth metal exchanged Y-zeolites and nondealuminated rare earth metal exchanged Y-zeolites and a matrix, wherein the catalyst composition contains about 30% by weight of Y-zeolite mixture, calculated on the volatile free basis and wherein the quantity of the dealuminated Y-zeolite incorporated in the mixture is in the range of about 10% by weight to about 99% by weight, the dealuminated Y-zeolite being characterized by a total silica-to-alumina (SiO 2 /Al 2 O 3 ) molar ratio of more than about 6 and not more than about 300, a sodium content, expressed as Na 2 O on a volatile-free basis of less than about 0.5% by weight and an a o of less than about 24.4 Angstroms.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein the quantity of dealuminated Y-zeolite incorporated in the mixture is from about 50% by weight to about 90% by weight.
Claim 4
Dependent Claim
22 words
The process of claim 1, wherein the matrix of the catalyst composition is selected from clay or inorganic oxides, or mixtures thereof.
Claim 5
Dependent Claim
21 words
The process of claim 3, wherein the inorganic oxide is selected from alumina, silica gel, or silica-alumina gels or mixtures thereof.
References Cited (Backward Citations)
US3804747A
Cited
US4218307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |