US4215015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High octane FCC catalyst
Assignee: Honeywell UOP LLC
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Filing: 1979-02-02
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Granted: 1980-07-29
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Expires: 1999-02-02
Abstract
Abstract A catalyst composition and process for the utilization of said catalyst. The catalyst is a zeolitic crystalline aluminosilicate dispersed in an amorphous silica-alumina matrix. The catalyst is manufactured by adding a crystalline aluminosilicate to an alumina-silica gel containing an organic polymer and spray drying the gel at a temperature sufficient to decompose the polymer. The catalyst is particularly effective in the catalytic cracking of hydrocarbon charge stocks.
Inventors
- 👤 Hosheng Tu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:02
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B01J2229/00; B01J2229/30; B01J2229/42; Y; Y10; Y10S; Y10S502/00; Y10S502/506
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
102 words
A catalytic composite comprising a zeolitic crystalline aluminosilicate dispersed in a silica-alumina matrix and having pore sizes in the intermediate range of about 100 to about 275 Angstroms in diameter, said composite having been manufactured by: (a) dispersing a zeolitic crystalline aluminosilicate in water to prepare a slurry; (b) preparing a gelation product by mixing together in an aqueous medium an inorganic aluminum salt, a water soluble anionic polyacrylamide and an alkali-metal silicate; (c) adding said slurry to said gelation product to obtain a slurry gel; and (d) spray drying said slurry gel at a temperature sufficient to decompose said organic polymer.
Claim 2
Dependent Claim
102 words
A catalytic composite comprising a zeolitic crystalline aluminosilicate dispersed in a silica-alumina matrix and having pore sizes in the intermediate range of about 100 to about 275 Angstroms in diameter, said composite having been manufactured by: (a) dispersing a zeolitic crystalline aluminosilicate in water to prepare a slurry; (b) preparing a gelation product by mixing together in an aqueous medium an inorganic aluminum salt, a water soluble anionic polyacrylamide and an alkali-metal silicate; (c) adding said slurry to said gelation product to obtain a slurry gel; and (d) spray drying said slurry gel at a temperature sufficient to decompose said organic polymer.
Claim 3
Dependent Claim
22 words
The catalytic composite of claim 1 further characterized with respect to step (a) in that said zeolitic crystalline aluminosilicte comprises Na-Y faujasite.
Claim 4
Dependent Claim
39 words
The catalyst composite of claim 1 further characterized with respect to step (b) in that the anion of said inorganic aluminum salt be selected from the group consisting of the sulfate ion, the halide ions and the nitrate ion.
Claim 5
Dependent Claim
22 words
The catalyst composite of claim 1 further characterized with respect to step (b) in that said alkali metal silicate comprises sodium silicate.
Claim 6
Dependent Claim
38 words
The catalyst composite of claim 1 further characterized with respect to step (a) in that a buffer solution is added to said slurry so as to adjust the pH of said slurry from about 4.0 to about 5.0.
Claim 7
Dependent Claim
23 words
The catalyst composite of claim 5 further characterized in that said buffer solution comprises an aqueous solution of sodium acetate and acetic acid.
Claim 8
Dependent Claim
39 words
The catalyst composite of claim 5 further characterized with respect to step (b) in that prior to said mixing, said inorganic aluminum salt, said water soluble anionic polyacrylamide and said alkali metal silicate are prepared in separate aqueous solutions.
Claim 9
Dependent Claim
103 words
The catalyst composite of claim 7 further characterized with respect to step (b) in that said mixing is effected by: (1) adding said solution of anionic polyacrylamide to said solution of alkali metal silicate to obtain mixture A; (2) adding said solution of inorganic aluminum salt to a dilute solution of mineral acid to obtain mixture B; (3) adding said mixture A to said mixture B over an extended period of time to obtain mixture C; and (4) adding a buffer solution to said mixture C and thereafter raising the pH of said mixture C to about 3.5 to obtain said gelation product.
Claim 10
Dependent Claim
34 words
The catalyst composite of claim 8 further characterized in that the temperature of said mixtures B and C and of said gelation product are maintained at from about 95° F. to about 100° F.
Claim 11
Dependent Claim
47 words
The catalyst composite of claim 9 further characterized in that said buffer solution added to said mixture C comprises an aqueous solution of sodium acetate and acetic acid and said raising of the pH of said mixture C is effected by the addition of aqueous ammonia solution.
Claim 12
Dependent Claim
28 words
The catalyst composite of claim 9 further characterized in that said anionic polyacrylamide comprises from 2 to 10 weight percent of said slurry gel on a dry basis.
Claim 13
Dependent Claim
54 words
The catalyst composite of claim 11 further characterized in that the temperature of said slurry gel is maintained at from about 95° F. to about 100° F., that said slurry gel is aged, that the pH of said slurry gel is raised to above 5 and that said slurry gel is thereafter again aged.
Claim 14
Dependent Claim
47 words
The catalyst composite of claim 12 further characterized in that the first aging of said slurry gel is for about 30 minutes, that said pH is raised by the addition of aqueous ammonia solution and that the subsequent aging is for a period of about 3 hours.
Claim 15
Dependent Claim
51 words
The catalyst composite of claim 12 further characterized in that subsequent to spray drying said slurry gel cations at exchangeable cationic sites in said zeolitic crystalline aluminosilicate are exchanged with one or more cations selected from the group consisting of the rare earth elements of the Periodic Table of the Elements.
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) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |