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US4584091A
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Cracking with co-matrixed zeolite and p/alumina
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1984-12-31
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Granted: 1986-04-22
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Expires: 2004-12-31
Abstract
Abstract A catalyst is provided which comprises a crystalline zeolite, discrete particles of phosphorus-containing alumina dispersed in a non-zeolitic inorganic oxide matrix. A catalytic cracking process utilizing the catalyst is also provided.
Inventors
- 👤 Lloyd A. Pine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:46
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/04; B01J29/00; B01J29/04; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
115 words
A process for the catalytic cracking of a hydrocarbon feed which comprises: contacting said feed at catalytic cracking conditions with a catalyst comprising: (a) a crystalline metallosilicate zeolite; (b) a non-zeolitic inorganic oxide matrix, said zeolite being dispersed in said matrix, and (c) discrete particles of phosphorus-containing alumina also dispersed in said matrix, said discrete particles having been prepared by contacting alumina having a BET surface area greater than 50 square meters per gram with a phosphorus compound selected from the group consisting of phosphoric acid, a salt of phosphoric acid, phosphorous acid, a salt of phosphorous acid, and mixtures thereof, for a time sufficient to incorporate an effective amount of phosphorus in said alumina.
Claim 2
Dependent Claim
115 words
A process for the catalytic cracking of a hydrocarbon feed which comprises: contacting said feed at catalytic cracking conditions with a catalyst comprising: (a) a crystalline metallosilicate zeolite; (b) a non-zeolitic inorganic oxide matrix, said zeolite being dispersed in said matrix, and (c) discrete particles of phosphorus-containing alumina also dispersed in said matrix, said discrete particles having been prepared by contacting alumina having a BET surface area greater than 50 square meters per gram with a phosphorus compound selected from the group consisting of phosphoric acid, a salt of phosphoric acid, phosphorous acid, a salt of phosphorous acid, and mixtures thereof, for a time sufficient to incorporate an effective amount of phosphorus in said alumina.
Claim 3
Dependent Claim
31 words
The process of claim 1 wherein said phosphorus compound is selected from the group consisting of an ammonium salt of phosphoric acid and ammonium salt of phosphorous acid and mixtures thereof.
Claim 4
Dependent Claim
39 words
The process of claim 1 wherein said phosphorus is present in said discrete particles of alumina in an amount of at least about 0.1 wt.% based on the weight of said discrete particles of alumina, calculated as elemental phosphorus.
Claim 5
Dependent Claim
41 words
The process of claim 1 wherein said phosphorus is present in said discrete particles of alumina in an amount ranging from about 0.2 to about 5.0 wt.%, calculated as elemental phosphorus, based on the weight of said discrete particles of alumina.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein said catalyst comprises from about 0.04 to about 2.0 wt.% of said phosphorus.
Claim 7
Dependent Claim
20 words
The process of claim 1 wherein said zeolite is a Y-type zeolite having a unit cell size below 24.7 angstroms.
Claim 8
Dependent Claim
21 words
The process of claim 1 wherein said zeolite is an ultrastable Y-zeolite having a unit cell size below about 24.5 Angstroms.
Claim 9
Dependent Claim
26 words
The process of claim 1 wherein said matrix is selected from the group consisting of silica, alumina, silica-alumina, magnesia, zirconia, titania, boria, chromia and mixtures thereof.
Claim 10
Dependent Claim
10 words
The process of claim 1 wherein said matrix comprises silica-alumina.
Claim 11
Dependent Claim
72 words
The process of claim 1 wherein said zeolite is an ultrastable Y-type zeolite present in an amount ranging from about 1 to about 40 wt.%, said discrete particles of phosphorus-containing alumina being present in an amount ranging from about 5 to about 40 wt.%, said phosphorus being present in an amount ranging from about 0.5 to about 5.0 wt.%, based on said discrete particles of alumina, and wherein said matrix comprises silica-alumina.
Claim 12
Dependent Claim
21 words
The process of claim 1 wherein said catalytic cracking conditions include a temperature ranging from about 700° to about 1,300° F.
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