US4259212A
Expired / Lapsed
US
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Octane improvement cracking catalyst
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1979-09-28
•
Granted: 1981-03-31
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Expires: 1999-09-28
Abstract
Abstract A cracking catalyst comprising discrete particles of ultra-stable Y-type zeolite and discrete particles of alumina, which particles are dispersed in a porous oxide matrix to produce a catalyst containing 5-40 wt. % ultra-stable Y-type zeolite, 5-40 wt. % alumina and 40-90 wt. % of porous oxide matrix. The cracking catalyst has unusually high activity and selectivity for the production of high octane gasoline fractions from higher boiling point feedstocks.
Inventors
- 👤 Elroy M. Gladrow
- 👤 William E. Winter
- 👤 William L. Schuette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:05
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
45 words
A cracking catalyst composition comprising discrete particles of ultra-stable Y zeolite and discrete particles of alumina, which particles are dispersed in a porous oxide matrix to produce a catalyst containing 5-40 wt.% ultra-stable Y zeolite, 5-40 wt.% alumina and 40-90 wt.% of porous oxide matrix.
Claim 2
Dependent Claim
45 words
A cracking catalyst composition comprising discrete particles of ultra-stable Y zeolite and discrete particles of alumina, which particles are dispersed in a porous oxide matrix to produce a catalyst containing 5-40 wt.% ultra-stable Y zeolite, 5-40 wt.% alumina and 40-90 wt.% of porous oxide matrix.
Claim 3
Dependent Claim
12 words
The catalyst of claim 1 wherein said porous oxide matrix comprises silica.
Claim 4
Dependent Claim
18 words
The catalyst of claim 2 wherein said ultra-stable Y zeolite contains less than 1% rare earth metal oxides.
Claim 5
Dependent Claim
18 words
The catalyst of claim 3 wherein said ultra-stable Y zeolite contains less than 1 wt.% Na 2 O.
Claim 6
Dependent Claim
13 words
The catalyst of claim 4 wherein said porous oxide matrix comprises silica-alumina gel.
Claim 7
Dependent Claim
27 words
The catalyst of claim 5 having the ratio weight percent Na 2 O on total catalyst/weight percent zeolite in total catalyst equal to or less than 0.013.
Claim 8
Dependent Claim
11 words
The catalyst of claim 6 wherein said alumina comprises alumina gel.
Claim 9
Dependent Claim
20 words
The catalyst of claim 7 wherein said ultra-stable Y zeolite has a unit cell size of less than 24.40 A.
Claim 10
Dependent Claim
23 words
The catalyst of claim 8 wherein said catalyst comprises 10-30 wt.% ultra-stable Y zeolite, 10-30 wt.% alumina and 50-80 wt.% of silica-alumina gel.
Claim 11
Dependent Claim
13 words
The catalyst of claim 1 wherein said porous oxide matrix comprises silica-alumina gel.
Claim 12
Dependent Claim
11 words
The catalyst of claim 10 wherein said alumina comprises alumina gel.
Claim 13
Dependent Claim
49 words
A cracking catalyst composition comprising discrete particles of ultra-stable Y zeolite containing less than 1 wt.% Na 2 O and discrete particles of alumina, which particles are dispersed in silica-alumina gel to produce a catalyst containing 5-40 wt.% ultra-stable Y zeolite, 5-40 wt.% alumina and 40-90 wt.% silica-alumina gel.
Claim 14
Dependent Claim
49 words
A cracking catalyst composition comprising discrete particles of ultra-stable Y zeolite containing less than 1 wt.% Na 2 O and discrete particles of alumina, which particles are dispersed in silica-alumina gel to produce a catalyst containing 5-40 wt.% ultra-stable Y zeolite, 5-40 wt.% alumina and 40-90 wt.% silica-alumina gel.
Claim 15
Independent Claim
92 words
A method for preparing a cracking catalyst which comprises: (1) forming an aqueous slurry mixture containing (a) a porous oxide, (b) particles of alumina, and (c) particles of ultra-stable Y zeolite; (2) drying said mixture to form a catalyst composite comprising discrete particles of ultra-stable Y zeolite and discrete particles of alumina which are dispersed in a porous oxide matrix; (3) washing said catalyst composite to remove extraneous salts soluble in an aqueous ammonium salt solution; and (4) drying the washed catalyst composite to reduce the moisture content thereof below 15 wt.%.
Claim 16
Independent Claim
92 words
A method for preparing a cracking catalyst which comprises: (1) forming an aqueous slurry mixture containing (a) a porous oxide, (b) particles of alumina, and (c) particles of ultra-stable Y zeolite; (2) drying said mixture to form a catalyst composite comprising discrete particles of ultra-stable Y zeolite and discrete particles of alumina which are dispersed in a porous oxide matrix; (3) washing said catalyst composite to remove extraneous salts soluble in an aqueous ammonium salt solution; and (4) drying the washed catalyst composite to reduce the moisture content thereof below 15 wt.%.
Claim 17
Dependent Claim
28 words
The method of claim 13 wherein said porous oxide is a silica-alumina gel and said ultra-stable Y zeolite has a unit cell size of less than 24.40 A.
Claim 18
Dependent Claim
37 words
The method of claim 14 wherein said catalyst composite is successively washed in step (3) thereof with ammonium salt solution and water and said dried catalyst composite has the ratio: ##EQU3## equal to or less than 0.013.
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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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |