US5006497A
Expired / Lapsed
US
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Multi component catalyst and a process for catalytic cracking of heavy hydrocarbon feed to lighter products
Assignee: Mobil Oil AS
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Filing: 1988-12-30
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Granted: 1991-04-09
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Expires: 2008-12-30
Abstract
Abstract A catalytic cracking catalyst and process are disclosed using a catalyst containing: a matrix, a large pore molecular sieve, a shape selective paraffin cracking/isomerization zeolite and a shape selective aliphatic aromatization zeolite. An exemplary catalyst comprises dealuminized zeolite Y, optionally containing rare earth elements, HZSM-5, and gallium ZSM-5 in a matrix. The matrix contains and protects the relatively fragile zeolite components and acts as a sodium and metals sink. The large pore molecular sieve cracks large hydrocarbons to lighter paraffins and olefins. The shape selective paraffin cracking/isomerization component cracks/isomerizes the paraffins produced by the large pore molecular seive. The shape selective aliphatic aromatization catalyst converts light paraffins and olefins into aromatics. A single shape selective zeolite, e.g., ZSM-5 with a controlled amount of an aromatization component such as gallium, may promote both paraffin cracking/isomerization and aromatization.
Inventors
- 👤 Joseph A. Herbst
- 👤 Hartley Owen
- 👤 Paul H. Schipper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:06
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/80; B01J29/40; B01J29/42; B01J29/46; 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
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
58 words
A catalytic cracking catalyst comprising catalytically effective amounts of: (i) at least one large pore molecular sieve; (ii) a shape selective zeolite having a constraint index of 1-12, being substantially free of hydrogenation/dehydrogenation components, and having paraffin cracking/isomerization activity; (iii) a shape selective zeolite having a constraint index of 1-12 and paraffin aromatization activity; and (iv) a matrix.
Claim 2
Dependent Claim
58 words
A catalytic cracking catalyst comprising catalytically effective amounts of: (i) at least one large pore molecular sieve; (ii) a shape selective zeolite having a constraint index of 1-12, being substantially free of hydrogenation/dehydrogenation components, and having paraffin cracking/isomerization activity; (iii) a shape selective zeolite having a constraint index of 1-12 and paraffin aromatization activity; and (iv) a matrix.
Claim 3
Dependent Claim
20 words
The catalyst of claim 1 wherein the large pore molecular sieve has a portal comprising at least 12 membered rings.
Claim 4
Dependent Claim
30 words
The catalyst of claim 1 wherein the large pore molecular sieve comprises at least one member selected from the group of zeolite Y, dealuminized Y, ultrastable Y and ultrahydrophobic Y.
Claim 5
Dependent Claim
28 words
The catalyst of claim 1 wherein the large pore molecular sieve comprises at least one member selected from the group of VPI-5, pillared clays, SAPO-37 and zeolite Beta.
Claim 6
Dependent Claim
15 words
The catalyst of claim 3 wherein the large pore molecular sieve contains rare earth elements.
Claim 7
Dependent Claim
31 words
The catalyst of claim 1 wherein at least one of the shape selective zeolites having a constraint index of 1-12 is selected from the group of ZSM-5, ZSM-11, ZSM-22, ZSM-35and ZSM-57.
Claim 8
Dependent Claim
23 words
The catalyst of claim 6 wherein the shape selective zeolite having paraffin cracking/isomerization activity is selected from the group of ZSM-5 and ZSM-11.
Claim 9
Dependent Claim
19 words
The catalyst of claim 1 wherein the shape selective zeolite having paraffin cracking/isomerization activity is in the hydrogen form.
Claim 10
Dependent Claim
32 words
The catalyst of claim 1 wherein the paraffin aromatization zeolite and the paraffin cracking/isomerization zeolite are the same shape selective zeolite, and the zeolite contains 0.05 to 1.0 wt % aromatization component.
Claim 11
Dependent Claim
17 words
The catalyst of claim 9 wherein the shape selective zeolite contains 0.05 to 1.0 wt % gallium.
Claim 12
Dependent Claim
12 words
The catalyst of claim 9 wherein the paraffin cracking/isomerization zeolite is HZSM-5.
Claim 13
Dependent Claim
12 words
The catalyst of claim 1 wherein the aromatization zeolite is gallium ZSM-5.
Claim 14
Dependent Claim
18 words
The catalyst of claim 1 wherein the matrix, exclusive of zeolites, comprises at least 7 wt % alumina.
Claim 15
Dependent Claim
31 words
The catalyst of claim 1 wherein the matrix, exclusive of zeolites, contains about 0.5 to 10 wt % of at least one of calcium, magnesium, barium, lanthanum, cerium and compounds thereof.
Claim 16
Dependent Claim
44 words
The catalyst of claim 1 wherein the catalytic cracking catalyst comprises: (i) 5-50 wt. % large pore molecular seive; (ii) 0.1-20 wt. % shape selective zeolite having paraffin cracking/isomerization activity; (iii) 0.1-20 wt. % shape selective zeolite having aromatization activity; in (iv) a matrix.
Claim 17
Dependent Claim
31 words
The catalyst of claim 1 comprising: (i) 10-45 wt % large pore molecular sieve; (ii) 0.5-5 wt % paraffin cracking/isomerizaion zeolite; (iii) 0.5-5 wt % aromatization zeolite; in (iv) a matrix.
Claim 18
Dependent Claim
60 words
The catalyst of claim 1 comprising: (i) 10-45 wt. % percent zeolite Y which has been at least partially dealuminized; (ii) 0.2-5 wt. % ZSM-5; at least a portion of which is in the hydrogen form, and a portion of which contains gallium, and the gallium content is equal to 0.05 to 1.0 wt % of the total ZSM-5 content.
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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) | 1994-04-08 | 1994-10-08 | 1995-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-08 | 1998-10-08 | 1999-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-08 | 2002-10-08 | 2003-04-09 | $7700.00 | Window Closed / Lapsed |