US4247416A
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Crystalline zeolite ZSM-25
Assignee: Mobil Oil AS
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Filing: 1979-02-28
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Granted: 1981-01-27
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Expires: 1999-02-28
Abstract
Abstract A new crystalline zeolite, designated "ZSM-25", a method of making the zeolite and using the zeolite in catalytic conversion of hydrocarbons, is the subject of this application. The new zeolite has a composition in the anhydrous state expressed in terms of mole ratios of oxides as follows: (0.01-0.4)R2O:(0.9+/-0.2)M2O:Al2O3: (6-10)SiO2 wherein R is an organic nitrogen-containing cation such as tetraethylammonium ions and M is an alkali metal cation such as sodium and is characterized by a specified X-ray powder diffraction pattern.
Inventors
- 👤 Harry G. Doherty
- 👤 Charles J. Plank
- 👤 Edward J. Rosinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:14
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/0201; B01J37/0209; B01J29/00; B01J29/04; B01J29/06; B01J29/70; C; C01; C01B; C01B39/00; C01B39/02; C01B39/46; C01B39/48; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/12; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G35/00; C10G35/04; C10G35/06; C10G35/095; C10G45/00; C10G45/58; C10G45/60; C10G45/64; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/70
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
58 words
A crystalline zeolite having a composition in the anhydrous form, expressed in terms of mole ratios of oxides as follows: (0.01-0.4)R.sub.2 O:(0.9±0.2)M.sub.2 O:Al.sub.2 O.sub.3 :(6-10)SiO.sub.2 wherein R is an organic nitrogen-containing cation and M is an alkali metal cation, said zeolite being characterized by an X-ray powder diffraction pattern as set forth in TABLE I of the specification.
Claim 2
Dependent Claim
58 words
A crystalline zeolite having a composition in the anhydrous form, expressed in terms of mole ratios of oxides as follows: (0.01-0.4)R.sub.2 O:(0.9±0.2)M.sub.2 O:Al.sub.2 O.sub.3 :(6-10)SiO.sub.2 wherein R is an organic nitrogen-containing cation and M is an alkali metal cation, said zeolite being characterized by an X-ray powder diffraction pattern as set forth in TABLE I of the specification.
Claim 3
Dependent Claim
28 words
The crystalline zeolite of claim 1 wherein R is an organic nitrogen-containing cation containing at least one alkyl or aryl group containing from one to seven carbon atoms.
Claim 4
Dependent Claim
13 words
The zeolite of claim 2 wherein R contains at least on ethyl group.
Claim 5
Dependent Claim
18 words
The zeolite of claim 3 wherein R is a quatenary ammonium cation containing at least one ethyl group.
Claim 6
Dependent Claim
11 words
The zeolite of claim 4 wherein R is a tetraethylammonium cation.
Claim 7
Dependent Claim
16 words
The zeolite of claim 5 wherein R is derived from tetraethylammonium bromide and M is sodium.
Claim 8
Dependent Claim
44 words
A zeolite resulting from the thermal treatment or ion exchange treatment, or a combination thereof, of the zeolite of claim 1, wherein said ion exchange treatment is carried out with hydrogen, ammonium, or metal ions of Groups IB through VIII of the Periodic Table.
Claim 9
Dependent Claim
44 words
A zeolite resulting from the thermal treatment or ion exchange treatment, or a combination thereof, of the zeolite of claim 2, wherein said ion exchange treatment is carried out with hydrogen, ammonium, or metal ions of Groups IB through VIII of the Periodic Table.
Claim 10
Dependent Claim
44 words
A zeolite resulting from the thermal treatment or ion exchange treatment, or a combination thereof, of the zeolite of claim 3, wherein said ion exchange treatment is carried out with hydrogen, ammonium, or metal ions of Groups IB through VIII of the Periodic Table.
Claim 11
Dependent Claim
44 words
A zeolite resulting from the thermal treatment or ion exchange treatment, or a combination thereof, of the zeolite of claim 4, wherein said ion exchange treatment is carried out with hydrogen, ammonium, or metal ions of Groups IB through VIII of the Periodic Table.
Claim 12
Dependent Claim
44 words
A zeolite resulting from the thermal treatment or ion exchange treatment, or a combination thereof, of the zeolite of claim 5, wherein said ion exchange treatment is carried out with hydrogen, ammonium, or metal ions of Groups IB through VIII of the Periodic Table.
Claim 13
Dependent Claim
44 words
A zeolite resulting from the thermal treatment or ion exchange treatment, or a combination thereof, of the zeolite of claim 6, wherein said ion exchange treatment is carried out with hydrogen, ammonium, or metal ions of Groups IB through VIII of the Periodic Table.
Claim 14
Dependent Claim
11 words
The crystalline zeolite of claim 1 admixed with a matrix therefor.
Claim 15
Dependent Claim
13 words
The crystalline zeolite of claim 13 wherein said matrix is an inorganic oxide.
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) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |