US4252684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystallized silica-alumina cogel and catalyst employing the same
Assignee: HARSHAW/FILTROL PARTNERSHIP A PARTNERSHIP OF
•
Filing: 1979-06-01
•
Granted: 1981-02-24
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Expires: 1999-06-01
Abstract
Abstract This invention relates to alpha (Si, Al)O 4 crystalline complex, and to silica-alumina gel and crystalline alumino silicate host containing said alpha (Si, Al)O 4 complex; both gels and crystalline alumina silicates containing a novel crystalline phase resulting from the hydrothermal treatment of the host (Si, Al)O 4 complexes, both amorphous gel and crystalline alumino silicates, in the presence of rare earth cations.
Inventors
- 👤 Hamid Alafandi
- 👤 Dennis Stamires
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:00
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
35 words
A modified faujasite type zeolite having an a o in the range including an X and a Y type faujasite and containing also a crystal phase characterized by d spacings corresponding substantially to Table 1.
Claim 2
Dependent Claim
35 words
A modified faujasite type zeolite having an a o in the range including an X and a Y type faujasite and containing also a crystal phase characterized by d spacings corresponding substantially to Table 1.
Claim 3
Dependent Claim
29 words
A modified faujasite type zeolite of claim 1, in which the d spacings includes also, at least some of the d spacings of Table 9, not in Table 1.
Claim 4
Dependent Claim
14 words
The modified type faujasite of claim 1 or 2 which is a Y zeolite.
Claim 5
Dependent Claim
17 words
A modified Y zeolite containing a crystalline phase corresponding substantially to the d spacings of Table 1.
Claim 6
Dependent Claim
17 words
A modified Y zeolite containing a crystalline phase corresponding substantially to the d spacings of Table 1.
Claim 7
Dependent Claim
17 words
A modified X zeolite containing a crystalline phase corresponding substantially to the d spacings of Table 1.
Claim 8
Dependent Claim
17 words
A modified X zeolite containing a crystalline phase corresponding substantially to the d spacings of Table 1.
Claim 9
Dependent Claim
18 words
A cracking catalyst comprising the modified zeolite of claim 1, 2, 3, 4, or 5, and a matrix.
Claim 10
Dependent Claim
55 words
The process of an hydrotreating sodium containing zeolite of the faujasite type by heating said zeolite in a solution containing rare earth cations at a temperature in excess of about 250° F. to reduce the sodium content of the zeolite and generating in said zeolite a crystalline phase other than those characteristic of said faujasites.
Claim 11
Dependent Claim
55 words
The process of an hydrotreating sodium containing zeolite of the faujasite type by heating said zeolite in a solution containing rare earth cations at a temperature in excess of about 250° F. to reduce the sodium content of the zeolite and generating in said zeolite a crystalline phase other than those characteristic of said faujasites.
Claim 12
Dependent Claim
19 words
The process of claim 7, in which the crystalline phase is characterized by the d spacings of Table 1.
Claim 13
Dependent Claim
42 words
The process of claim 8, in which the crystalline phase is characterized by the d spacings of Table 1 and also by at least some of the d spacings of Table 8 not in Table 9, other than those of Table 1.
Claim 14
Dependent Claim
26 words
A process of claim 8, in which the crystalline phase is characterized by the d spacings of Table 1 and the host is an X zeolite.
Claim 15
Dependent Claim
25 words
The process of claim 8 in which the crystalline phase is characterized by d spacings of Table 1 and the host is a Y zeolite.
Claim 16
Dependent Claim
41 words
The process of claim 8 in which the crystalline phase is characterized by d spacings of Table 1 and also by at least some of the d spacings of Table 8, not in Table 9, other than those of Table 1.
References Cited (Backward Citations)
US3173854A
Cited
US3346512A
Cited
US3423332A
Cited
US3437604A
Cited
US3536604A
Cited
US3551509A
Cited
US4085069A
Cited
US4142995A
Cited
US4139493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |