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Patent US4556549A successfully refreshed from Google Patents.
US4556549A
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Process for making zeolite ZSM-45 with an organocobalt complex
Assignee: Mobil Oil AS
•
Filing: 1983-11-29
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Granted: 1985-12-03
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Expires: 2003-11-29
Abstract
Abstract This invention relates to a method for preparing a synthetic porous crystalline aluminosilicate zeolite, characterized as zeolite ZSM-45. This crystalline material may have a molar ratio of silica to alumina of at least 8. This synthetic zeolite is analogous, in some respects, to the naturally occuring zeolite, levynite. The ZSM-45 zeolite is prepared with a cobalticinium directing agent. ZSM-45 exhibits a characteristic X-ray diffraction pattern.
Inventors
- 👤 Ernest W. Valyocsik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:44
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2892; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/72; B01J29/76; Y; Y10; Y10S; Y10S423/00; Y10S423/37
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A method for preparing a ZSM-45 aluminosilicate zeolite, said zeolite having the X-ray diffraction pattern as set forth in Table 1 of the specification, said method comprising the steps of (i) preparing a mixture capable of forming said aluminosilicate zeolite, said mixture containing sources of alkali metal ions, an oxide of aluminum, an oxide of silicon, a cobalticinium ion and water and having a composition in terms of moles of oxides, falling within the following ranes: ______________________________________
SiO.sub.2 /Al.sub.2 O.sub.3
10-30
OH.sup.- /SiO.sub.2
0.005-1.0
Z/SiO.sub.2 0.001-5.0
H.sub.2 O/SiO.sub.2
10-200
R/SiO.sub.2 0.10-3
______________________________________ wherein R represents said cobalticinium ion and Z represents said alkali metal ion; (ii) maintaining said mixture under sufficient conditions until a crystalline material is formed; and (iii) recovering the crystalline material from step (ii), wherein said crystalline material is ZSM-45.
Claim 2
Independent Claim
133 words
A method for preparing a ZSM-45 aluminosilicate zeolite, said zeolite having the X-ray diffraction pattern as set forth in Table 1 of the specification, said method comprising the steps of (i) preparing a mixture capable of forming said aluminosilicate zeolite, said mixture containing sources of alkali metal ions, an oxide of aluminum, an oxide of silicon, a cobalticinium ion and water and having a composition in terms of moles of oxides, falling within the following ranes: ______________________________________
SiO.sub.2 /Al.sub.2 O.sub.3
10-30
OH.sup.- /SiO.sub.2
0.005-1.0
Z/SiO.sub.2 0.001-5.0
H.sub.2 O/SiO.sub.2
10-200
R/SiO.sub.2 0.10-3
______________________________________ wherein R represents said cobalticinium ion and Z represents said alkali metal ion; (ii) maintaining said mixture under sufficient conditions until a crystalline material is formed; and (iii) recovering the crystalline material from step (ii), wherein said crystalline material is ZSM-45.
Claim 3
Dependent Claim
39 words
A method according to claim 1, wherein said mixture has a composition, in terms of moles of oxides, falling within the following ranges: ______________________________________
SiO.sub.2 /Al.sub.2 O.sub.3
10-15
OH.sup.- /SiO.sub.2
0.2-0.6
Z/SiO.sub.2
0.01-1.5
H.sub.2 O/SiO.sub.2
20-100
R/SiO.sub.2
0.05-1.5
______________________________________
Claim 4
Dependent Claim
21 words
A method according to claim 1, wherein said SiO 2 /Al 2 O 3 ratio of the reaction mixture is 10.
Claim 5
Dependent Claim
31 words
A method according to claim 1, wherein said reaction mixture has the following composition: ______________________________________
SiO.sub.2 /Al.sub.2 O.sub.3
15
OH.sup.- /SiO.sub.2
0.40
Na.sup.+ /SiO.sub.2
0.76
H.sub.2 O/SiO.sub.2
40
R/SiO.sub.2
0.10
______________________________________
Claim 6
Dependent Claim
31 words
A method according to claim 1, wherein said reaction mixture has the following composition: ______________________________________
SiO.sub.2 /Al.sub.2 O.sub.3
15
OH.sup.- /SiO.sub.2
0.40
Na.sup.+ /SiO.sub.2
0.53
H.sub.2 O/SiO.sub.2
40
R/SiO.sub.2
0.10
______________________________________
Claim 7
Dependent Claim
31 words
A method according to claim 1, wherein said reaction mixture has the following composition: ______________________________________
SiO.sub.2 /Al.sub.2 O.sub.3
10
OH.sup.- /SiO.sub.2
0.55
Na.sup.+ /SiO.sub.2
0.67
H.sub.2 O/SiO.sub.2
40
R/SiO.sub.2
0.10
______________________________________
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) | 1988-12-02 | 1989-06-03 | 1989-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-02 | 1993-06-03 | 1993-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-02 | 1997-06-03 | 1997-12-03 | $7700.00 | Window Closed / Lapsed |