US4563434A
Expired / Lapsed
US
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Hydrocracking catalyst
Assignee: Honeywell UOP LLC
•
Filing: 1985-01-28
•
Granted: 1986-01-07
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Expires: 2005-01-28
Abstract
Abstract A hydrocracking process, of especial use in the production of a relatively high yield of middle distillate products along with a smaller but still significant yield of gasoline from high boiling gas oils and the like, comprises contacting a gas oil or other hydrocarbon feedstock under hydrocracking conditions with a novel catalyst comprising one or more hydrogenation components on a support material comprising, in combination, a dispersion of silica-alumina in alumina and a zeolite of the Y crystalline structure but having a silica-to-alumina ratio above about 6.0.
Inventors
- 👤 John W. Ward
- 👤 Timothy L. Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:23
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/10; B01J29/106; B01J29/16; B01J29/166; C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G47/20
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
66 words
A catalyst comprising an active hydrogenation metal component on a suppport comprising a dispersion of silica-alumina in alumina and a crystalline aluminisilicate zeolite having the zeolite Y crystal structure, a silica-to-alumina mole ratio above about 6.0, and a water adsorption capacity at 25° C. and 4.6 mm Hg water vapor partial pressure of at least 20 percent by weight of the zeolite in its anhydrous form.
Claim 2
Dependent Claim
66 words
A catalyst comprising an active hydrogenation metal component on a suppport comprising a dispersion of silica-alumina in alumina and a crystalline aluminisilicate zeolite having the zeolite Y crystal structure, a silica-to-alumina mole ratio above about 6.0, and a water adsorption capacity at 25° C. and 4.6 mm Hg water vapor partial pressure of at least 20 percent by weight of the zeolite in its anhydrous form.
Claim 3
Dependent Claim
90 words
A catalyst comprising a Group VIB and/or a Group VIII active metal component on a support comprising a dispersion of silica-alumina in alumina and a crystalline aluminosilicate zeolite having catalytic cracking activity, a silica-to-alumina mole ratio above about 6.0, an X-ray powder diffraction pattern consistent with a Y zeolite having a unit cell size of about 24.75 Angstroms or less and a water adsorption capacity at 25° C. and 4.6 mm Hg water vapor partial pressure of at least 20 percent by weight of the zeolites in its anhydrous form.
Claim 4
Dependent Claim
90 words
A catalyst comprising a Group VIB and/or a Group VIII active metal component on a support comprising a dispersion of silica-alumina in alumina and a crystalline aluminosilicate zeolite having catalytic cracking activity, a silica-to-alumina mole ratio above about 6.0, an X-ray powder diffraction pattern consistent with a Y zeolite having a unit cell size of about 24.75 Angstroms or less and a water adsorption capacity at 25° C. and 4.6 mm Hg water vapor partial pressure of at least 20 percent by weight of the zeolites in its anhydrous form.
Claim 5
Dependent Claim
22 words
A catalyst as defined by claim 1 wherein the alkali metal content of said zeolite is less than about 0.5 weight percent.
Claim 6
Dependent Claim
19 words
A catalyst as defined by claim 2 wherein said silica-to-alumina mole ratio is between about 8.5 and about 15.
Claim 7
Dependent Claim
61 words
A catalyst as defined by claim 2 wherein said catalyst comprises both a Group VIB and a Group VIII metal component on said support, said Group VIB metal component being selected from the group consisting of molybdenum, tungsten, and the compounds thereof, and said Group VIII metal component being selected from the group consisting of nickel, cobalt, and the compounds thereof.
Claim 8
Dependent Claim
24 words
A catalysts as defined by claim 2 wherein said zeolite comprises between about 30 weight percent and about 45 weight percent of said support.
Claim 9
Dependent Claim
29 words
A catalyst as defined by claim 2 wherein said dispersion comprises a silica-alumina containing between about 50 weight percent and about 90 weight percent silica dispersed in gamma alumina.
Claim 10
Dependent Claim
42 words
A catalyst as defined by claim 2 wherein said zeolite comprises between about 10 and about 80 weight percent of said support and has as an X-ray powder diffraction pattern consistent with a Y-zeolite of unit cell size below about 24,55 Angstroms.
Claim 11
Dependent Claim
32 words
A catalyst as defined by claim 8 wherein said zeolite has a silica-to-alumina mole ratio between about 8.5 and about 15.0 and comprises more than about 30 weight percent of said catalyst.
Claim 12
Dependent Claim
24 words
A catalyst as defined by claim 8 wherein said zeolite contains less than about 0.2 weight percent of alkali metals, calculated as the monoxides.
Claim 13
Dependent Claim
56 words
A catalyst as defined by claim 10 wherein said zeolite has a unit cell size between about 24.20 and about 24.55 Angstroms and an oxygen adsorption capacity at 100 mm Hg and -183° C. of at least 25 weight percent, said zeolite retaining substantially all its crystallinity at a temperature of 975° C. in dry air.
Claim 14
Dependent Claim
33 words
A catalyst as defined by claim 2 wherein said silica-to-alumina mole ratio is no greater than about 20 and said silica-alumina comprises between about 5 and about 75 weight percent of said dispersion.
Claim 15
Dependent Claim
123 words
A catalyst comprising a Group VIB and/or Group VIII metal component, a zeolite, and a dispersion of silica-alumina in alumina, said zeolite being prepared by a process comprising: (a) contacting a Y zeolite with a fluorosilicate compound, said Y zeolite having been at least partially cation-exchanged to contain ammonium cations and said contacting resulting in a zeolite having a silica-to-alumina mole ratio above about 6.0; and (b) calcining the resultant zeolite at an elevated temperature in the presence of water vapor at a partial pressure of at least 0.2 psi, said calcined zeolite having a water adsorption capacity at 25° C. and 4.6 mm Hg water vapor partial pressure of at least 20 percent by weight of the zeolite in its anhydrous form.
Claim 16
Dependent Claim
123 words
A catalyst comprising a Group VIB and/or Group VIII metal component, a zeolite, and a dispersion of silica-alumina in alumina, said zeolite being prepared by a process comprising: (a) contacting a Y zeolite with a fluorosilicate compound, said Y zeolite having been at least partially cation-exchanged to contain ammonium cations and said contacting resulting in a zeolite having a silica-to-alumina mole ratio above about 6.0; and (b) calcining the resultant zeolite at an elevated temperature in the presence of water vapor at a partial pressure of at least 0.2 psi, said calcined zeolite having a water adsorption capacity at 25° C. and 4.6 mm Hg water vapor partial pressure of at least 20 percent by weight of the zeolite in its anhydrous form.
Claim 17
Dependent Claim
24 words
A catalyst as defined by claim 13 wherein said Y zeolite is contacted in step (a) with an aqueous solution of a fluorosilicate salt.
Claim 18
Dependent Claim
14 words
A catalyst as defined by claim 14 wherein said fluorosilicate salt comprises ammonium hexafluorosilicate.
Claim 19
Dependent Claim
28 words
A catalyst as defined by claim 15 wherein after calcination in step (b), the sodium content of the resulting zeolite is reduced by cation exchange with ammonium cations.
Claim 20
Dependent Claim
21 words
A catalyst as defined by claim 16 wherein said resultant zeolite has a sodium content less than about 0.5 weight percent.
Claim 21
Dependent Claim
26 words
A catalyst as defined by claim 16 wherein said catalyst comprises a nickel or cobalt active metal component and a molybdenum or tungsten active metal component.
Claim 22
Dependent Claim
15 words
A catalyst as defined by claim 1 wherein said dispersion comprises silica-alumina in gamma alumina.
Claim 23
Dependent Claim
16 words
A catalyst as defined by claim 15 wherein said dispersion comprises silica-alumina dispersed in gamma alumina.
Claim 24
Dependent Claim
22 words
A catalyst as defined by claim 15 wherein said catalyst comprises a nickel active metal component and a tungsten active metal component.
Claim 25
Dependent Claim
25 words
A catalyst as defined by claim 21 wherein said contacting results in a zeolite having a silica-to-alumina mole ratio between about 8.0 and about 20.
Claim 26
Dependent Claim
16 words
A catalyst as defined by claim 22 wherein said dispersion comprises silica-alumina dispersed in gamma alumina.
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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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |