US4824815A
Expired / Lapsed
US
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Cracking catalysts containing strontium carbonate
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1987-02-13
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Granted: 1989-04-25
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Expires: 2007-02-13
Abstract
Abstract This invention relates to a catalyst suitable for use in a fluid catalytic process and a method of using the catalyst on hydrocarbons containing one or more poison metal of vanadium or nickel to convert the hydrocarbons to lower boiling fractions. The catalyst contains a particulate and substantially water-insoluble strontium compound (in addition to a conventional zeolite and catalyst matrix) which reacts with and traps the metal poison to preserve the structure of the zeolite and, in addition, lowers the coke make and hydrogen production.
Inventors
- 👤 Edwin L. Kugler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:22
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084; B01J2229/00; B01J2229/30; B01J2229/42; Y; Y10; Y10S; Y10S502/00; Y10S502/521
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
62 words
A catalytic cracking catalyst comprising: a zeolitic material; a matrix material; and strontium carbonate dispersed in the matrix as discrete particles, said carbonate being present in an amount sufficient to form a product having a melting point greater than about 670° C. when the carbonate is reacted with vanadium or nickel containing compounds or mixtures thereof at fluid catlaytic cracking regenerator temperatures.
Claim 2
Dependent Claim
62 words
A catalytic cracking catalyst comprising: a zeolitic material; a matrix material; and strontium carbonate dispersed in the matrix as discrete particles, said carbonate being present in an amount sufficient to form a product having a melting point greater than about 670° C. when the carbonate is reacted with vanadium or nickel containing compounds or mixtures thereof at fluid catlaytic cracking regenerator temperatures.
Claim 3
Dependent Claim
12 words
The catalyst of claim 1 wherein the zeolitic material is an aluminosilicate.
Claim 4
Dependent Claim
22 words
The catalyst of claim 1 wherein the zeolite material is selected from faujasite a synthetic zeolite having the structure of zeolite Y.
Claim 5
Dependent Claim
19 words
The catalyst of claim 1 wherein the zeolitic material is a synthetic zeolite having the structure of zeolite Y.
Claim 6
Dependent Claim
24 words
The catalyst of claim 3 wherein the zeolitic material is at least partially exchanged with one or more of lanthanum, cerium, neodymium, and praesodymiium.
Claim 7
Dependent Claim
40 words
The catalyst of claim 3 wherein the matrix material is selected form one or more natural mineral clays selected from kanolin, halloysite, and montmorilonite, and one or more inorganic oxides selected from silica, alumina, silica-alumina, silica-zirconia, silica-magnesia, alumina-boria, and alumina-titania.
Claim 8
Dependent Claim
11 words
The catalyst of claim 6 wherein the matrix is silica-alumina cogel.
Claim 9
Dependent Claim
18 words
The catalyst of claim 1 wherein the amount of zeolitic material ranges from 3 to 35 wt. %.
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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) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |