US4179409A
Expired / Lapsed
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Hydrocarbon cracking catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1977-11-09
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Granted: 1979-12-18
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Expires: 1997-11-09
Abstract
Abstract A perovskite is added to a conventional hydrocarbon cracking catalyst comprising a zeolite and an inorganic oxide gel matrix. The perovskite is present in said catalyst in an amount up to about 10 weight percent based on the total catalyst.
Inventors
- 👤 Elroy M. Gladrow
- 👤 Kenneth S. Wheelock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:44
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; B01J23/00; B01J23/002; B01J2523/00; Y; Y10; Y10S; Y10S502/00; Y10S502/525
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
28 words
A catalyst comprising (1) a crystalline aluminosilicate zeolite, (2) an inorganic oxide gel, and (3) an effective amount of a perovskite having at least one transition metal cation.
Claim 2
Dependent Claim
28 words
A catalyst comprising (1) a crystalline aluminosilicate zeolite, (2) an inorganic oxide gel, and (3) an effective amount of a perovskite having at least one transition metal cation.
Claim 3
Dependent Claim
35 words
The catalyst of claim 1, wherein said transition metal cation is selected from the group of elements having atomic numbers 21 to 30, 39 to 48, 57 to 80, 89 to 92 and mixtures thereof.
Claim 4
Dependent Claim
15 words
The catalyst of claim 1 wherein said perovskite comprises at least two transition metal cations.
Claim 5
Dependent Claim
26 words
The catalyst of claim 1, wherein said transition metal cation is selected from the group consisting of lanthanum, cobalt, cerium, hafnium, chromium, zirconium and mixtures thereof.
Claim 6
Dependent Claim
21 words
The catalyst of claim 1, wherein said perovskite comprises from about 0.5 to about 10 weight percent of the total catalyst.
Claim 7
Dependent Claim
21 words
The catalyst of claim 1 wherein said perovskite comprises from about 1.5 to about 4 weight percent of the total catalyst.
Claim 8
Dependent Claim
16 words
The catalyst of claim 1, wherein said catalyst additionally comprises a substantially catalytically inert porous material.
Claim 9
Dependent Claim
26 words
The catalyst of claim 7, wherein said catalytically inert porous material is selected from the group consisting of alumina, titania, silica, zirconia, magnesia and mixtures thereof.
Claim 10
Dependent Claim
14 words
The catalyst of claim 7, wherein said catalytically inert porous material is bulk alumina.
Claim 11
Dependent Claim
12 words
The catalyst of claim 1, wherein said perovskite is a supported perovskite.
Claim 12
Dependent Claim
18 words
The catalyst of claim 10, wherein the support of said perovskite is a substantially catalytically inert porous material.
Claim 13
Dependent Claim
28 words
The catalyst of claim 1, wherein said crystalline aluminosilicate is present in an amount ranging from about 3 to about 20 weight percent, based on the total catalyst.
Claim 14
Dependent Claim
14 words
The catalyst of claim 1, wherein said inorganic oxide gel is a silica-containing gel.
Claim 15
Dependent Claim
15 words
The catalyst of claim 1 wherein said inorganic oxide gel is a cogel of silica-alumina.
Claim 16
Dependent Claim
23 words
The catalyst of claim 1 wherein said inorganic oxide gel comprises from about 45 to about 95 weight percent of the total catalyst.
Claim 17
Dependent Claim
18 words
The catalyst of claim 1, wherein said catalyst comprises a crystalline aluminosilicate zeolite having the structure of faujasite.
Claim 18
Dependent Claim
74 words
A catalyst comprising (1) from about 5 to about 16 weight percent of a crystalline aluminosilicate zeolite, (2) from about 60 to about 90 weight percent of an inorganic oxide gel, and (3) from about 1.5 to about 4 weight percent of a perovskite having a transition metal cation selected from the group consisting of lanthanum, cobalt, cerium, hafnium, chromium, zirconium and mixtures thereof, each of said weights being based on the total catalyst.
Claim 19
Dependent Claim
74 words
A catalyst comprising (1) from about 5 to about 16 weight percent of a crystalline aluminosilicate zeolite, (2) from about 60 to about 90 weight percent of an inorganic oxide gel, and (3) from about 1.5 to about 4 weight percent of a perovskite having a transition metal cation selected from the group consisting of lanthanum, cobalt, cerium, hafnium, chromium, zirconium and mixtures thereof, each of said weights being based on the total catalyst.
Claim 20
Dependent Claim
32 words
The catalyst of claim 1, wherein said zeolite has a uniform pore diameter ranging from about 6 to about 15 Angstroms and wherein the silica to alumina ratio is greater than 3.
Claim 21
Dependent Claim
26 words
The catalyst of claim 1 wherein said zeolite comprises a cation selected from the group consisting of rare earth metals, calcium, magnesium, hydrogen or mixtures thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |