Patent EP0252761A2 successfully refreshed from Google Patents.
EP0252761A2
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Hydrocarbon cracking catalysts and processes utilizing the same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1987-07-10
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Granted: —
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Expires: 2007-07-10
Abstract
Abstract A catalyst is provided which comprises a phosphorus-treated ultrastable Y-type crystalline zeolite and a non-zeolitic inorganic oxide matrix. A catalytic cracking process utilizing the catalyst is also provided.
Inventors
- 👤 William Lee Scheutte
- 👤 Lloyd Albert Pine
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:55
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: 9
Claim 1
Independent Claim
62 words
A catalyst comprising: (a) a non-zeolitic inorganic oxide matrix, and (b) an ultrastable Y-type crystalline zeolite, said zeolite having been pretreated by contacting said zeolite with a phosphorous compound selected from phosphoric acid, phosphorous acid, a salt of phosphoric acid, a salt of phosphorous acid, and mixtures thereof for a time sufficient to composite an effective amount of phosphorous with said zeolite.
Claim 2
Dependent Claim
62 words
A catalyst comprising: (a) a non-zeolitic inorganic oxide matrix, and (b) an ultrastable Y-type crystalline zeolite, said zeolite having been pretreated by contacting said zeolite with a phosphorous compound selected from phosphoric acid, phosphorous acid, a salt of phosphoric acid, a salt of phosphorous acid, and mixtures thereof for a time sufficient to composite an effective amount of phosphorous with said zeolite.
Claim 3
Dependent Claim
47 words
The catalyst of claim 1 wherein said zeolite, before being contacted with said phosphorous compound, is subjected to an atmosphere comprising from about 5 mol percent to about 100 mol percent steam at a temperature ranging from about 1000 to about 1600°F (about 537.8 to about 871.1°C).
Claim 4
Dependent Claim
30 words
The catalyst of claim 1 or claim 2 wherein said phosphorous compound is selected from an ammonium salt of phosphoric acid, an ammonium salt of phosphorous acid and mixtures thereof.
Claim 5
Dependent Claim
39 words
The catalyst of any one of claims 1 to 3 wherein said phosphorous is composited with said zeolite in an amount of at least about 0.1 weight percent, based on the weight of the zeolite, calculated as elemental phosphorous.
Claim 6
Dependent Claim
33 words
The catalyst of any one of claims 1 to 4 wherein said zeolite is an ultrastable Y zeolite having a unit cell size below about 24.5 Angstroms (i.e. below about 24.5 × 10⁻¹⁰m).
Claim 7
Dependent Claim
27 words
The catalyst of any one of claims 1 to 5 wherein said matrix is selected from silica, alumina, silica-alumina, magnesia, zirconia, titania, boria, chromia and mixtures thereof.
Claim 8
Dependent Claim
55 words
The catalyst of any one of claims 1 to 6 wherein said zeolite is present in an amount ranging from about 1 to 40 weight percent, and wherein said phosphorous is present in an amount ranging from about 0.5 to 5 weight percent based on said zeolite, and wherein said matrix comprises silica and alumina.
Claim 9
Dependent Claim
31 words
A process for the catalytic cracking of a hydrocarbon feed which comprises contacting said feed at catalytic cracking conditions with a catalyst according to any one of claims 1 to 7.
References Cited (Backward Citations)
No citation records indexed.
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