US4567152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Co-matrixed zeolite and p/alumina
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1984-12-13
•
Granted: 1986-01-28
•
Expires: 2004-12-13
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
2026-10-28 12:30
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/04; 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: 11
Claim 1
Independent Claim
95 words
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
95 words
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 catalyst of claim 1 wherein said phosphorus compound is selected from the group consisting of an ammonium salt of phosphoric acid, an ammonium salt of phosphorous acid, and mixtures thereof.
Claim 4
Dependent Claim
39 words
The catalyst 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 catalyst 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 catalyst of claim 1 wherein said catalyst comprises from about 0.04 to about 2.0 wt.% of said phosphorus.
Claim 7
Dependent Claim
21 words
The catalyst of claim 1 wherein said zeolite is a Y-type zeolite having a unit cell size below about 24.7 angstroms.
Claim 8
Dependent Claim
22 words
The catalyst of claim 1 wherein said zeolite is an ultrastable Y zeolite have a unit cell size below about 24.5 Angstroms.
Claim 9
Dependent Claim
26 words
The catalyst 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 catalyst of claim 1 wherein said matrix comprises silica-alumina.
Claim 11
Dependent Claim
72 words
The catalyst 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.
References Cited (Backward Citations)
US3507778A
Cited
US4285806A
Cited
US4259212A
Cited
US4158621A
Cited
US4179358A
Cited
US4243556A
Cited
US4283309A
Cited
US4228036A
Cited
US4456780A
Cited
US4235754A
Cited
US4277373A
Cited
US4252635A
Cited
US4319983A
Cited
US4376039A
Cited
JPS57150441A
Cited
US4430199A
Cited
US4431517A
Cited
US4431516A
Cited
US4454241A
Cited
US4512875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |