US4224188A
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Aluminum faujasites, catalyst containing same and process of producing same
Assignee: HARSHAW/FILTROL PARTNERSHIP A PARTNERSHIP OF
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Filing: 1978-03-13
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Granted: 1980-09-23
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Expires: 1998-03-13
Abstract
Abstract This invention relates to zeolites of the faujasite type generally referred to as X or Y zeolites which contain both aluminum and NH 4 in exchange position and catalysts employing the same. The zeolite of our invention is derived from the sodium form of the zeolite by first exchanging the sodium form with an aluminum ion to replace a substantial portion of the sodium and further reducing the sodium content of the zeolite by exchange with an ammonium ion.
Inventors
- 👤 Hamid Alafandi
- 👤 Dennis Stamires
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:36
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; Y; Y10; Y10S; Y10S423/00; Y10S423/21
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
80 words
The aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and then further exchanging the said treated zeolite with a salt of a monovalent or polyvalent cation other than aluminum and further reducing the sodium cation in the exchanged zeolite.
Claim 2
Dependent Claim
80 words
The aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and then further exchanging the said treated zeolite with a salt of a monovalent or polyvalent cation other than aluminum and further reducing the sodium cation in the exchanged zeolite.
Claim 3
Dependent Claim
33 words
The zeolite of claim 1 in which the cations are chosen from the group consisting of the alkaline earth cations, rare earth cations and a metallic cation of atomic number 24 through 29.
Claim 4
Dependent Claim
86 words
The process of forming an aluminum exchanged zeolite of the faujasite type which comprises treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and then further exchanging the said last named zeolite with a salt of a monovalent or polyvalent cation other than aluminum and further reducing the sodium content of the zeolite by said further exchange.
Claim 5
Dependent Claim
86 words
The process of forming an aluminum exchanged zeolite of the faujasite type which comprises treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and then further exchanging the said last named zeolite with a salt of a monovalent or polyvalent cation other than aluminum and further reducing the sodium content of the zeolite by said further exchange.
Claim 6
Dependent Claim
33 words
The process of claim 3 in which the cations are chosen from the group consisting of the alkaline earth cations, rare earth cations and a metallic cation of atomic number 24 through 29.
Claim 7
Dependent Claim
89 words
A catalyst comprising a matrix and an aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and then further exchanging the said last name zeolite with a salt of a monovalent or polyvalent cation other than aluminum and further reducing the sodium content in said by said further exchange.
Claim 8
Dependent Claim
89 words
A catalyst comprising a matrix and an aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and then further exchanging the said last name zeolite with a salt of a monovalent or polyvalent cation other than aluminum and further reducing the sodium content in said by said further exchange.
Claim 9
Dependent Claim
33 words
The catalyst of claim 5 in which the cations are chosen from the group consisting of the alkaline earth cations, rare earth cations and a metallic cation of atomic number 24 through 29.
Claim 10
Dependent Claim
105 words
A process for forming a catalyst which comprises mixing in a water slurry a matrix and an aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and then further exchanging the said last named zeolite with a salt of a monovalent or polyvalent cation other than aluminum and further reducing the sodium content in said zeolite by said further exchange and spray drying said slurry.
Claim 11
Dependent Claim
105 words
A process for forming a catalyst which comprises mixing in a water slurry a matrix and an aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and then further exchanging the said last named zeolite with a salt of a monovalent or polyvalent cation other than aluminum and further reducing the sodium content in said zeolite by said further exchange and spray drying said slurry.
Claim 12
Dependent Claim
33 words
The process of claim 7 in which the cations are chosen from the group consisting of the alkaline earth cations, rare earth cations and a metallic cation of atomic number 24 through 29.
Claim 13
Dependent Claim
72 words
The aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in about less than about 6% expressed as Na 2 O on a volatile free basis and thereafter further exchanging the said treated zeolite with a salt of ammonium and further reducing the sodium content in said zeolite.
Claim 14
Dependent Claim
72 words
The aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in about less than about 6% expressed as Na 2 O on a volatile free basis and thereafter further exchanging the said treated zeolite with a salt of ammonium and further reducing the sodium content in said zeolite.
Claim 15
Dependent Claim
74 words
The process of forming an aluminum exchanged zeolite of the faujasite type which comprises treating a sodium zeolite with an aluminum salt solution to form a zeolite of the faujasite type containing Na in exchange position in amount less than about 6% expresses as Na 2 O on a volatile free basis and further exchanging the said last name zeolite with a salt of ammonium and further reducing the sodium content in said zeolite.
Claim 16
Dependent Claim
74 words
The process of forming an aluminum exchanged zeolite of the faujasite type which comprises treating a sodium zeolite with an aluminum salt solution to form a zeolite of the faujasite type containing Na in exchange position in amount less than about 6% expresses as Na 2 O on a volatile free basis and further exchanging the said last name zeolite with a salt of ammonium and further reducing the sodium content in said zeolite.
Claim 17
Dependent Claim
78 words
A catalyst comprising a matrix and an aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expresses as Na 2 O on a volatile free basis and further exchanging the said last name zeolite with a salt of ammonium and further reducing the sodium content in said zeolite.
Claim 18
Dependent Claim
78 words
A catalyst comprising a matrix and an aluminum exchanged zeolite of the faujasite type which is produced by treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expresses as Na 2 O on a volatile free basis and further exchanging the said last name zeolite with a salt of ammonium and further reducing the sodium content in said zeolite.
Claim 19
Dependent Claim
77 words
A process for forming a catalyst which comprises treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and further exchanging the said last named zeolite with a salt of ammonium and further reducing the sodium content in said zeolite, and mixing said further exchanged zeolite with a matrix.
Claim 20
Dependent Claim
77 words
A process for forming a catalyst which comprises treating a sodium zeolite of the faujasite type with an aluminum salt solution to form a zeolite containing Na in exchange position in amount less than about 6% expressed as Na 2 O on a volatile free basis and further exchanging the said last named zeolite with a salt of ammonium and further reducing the sodium content in said zeolite, and mixing said further exchanged zeolite with a matrix.
Claim 21
Dependent Claim
31 words
The product of claims 1, 2, 5, 6, 9, or 11 in which the sodium content of the further exchanged zeolite is less than about 5% expressed as Na 2 O.
Claim 22
Dependent Claim
35 words
The process of claims 3, 4, 7, 8, 10, or 12 in which the sodium content of said zeolite is reduced by said further exchange to less than about 5% expressed as Na 2 O.
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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) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |