US4482531A
Expired / Lapsed
US
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Synthesis of ZSM-12 zeolite
Assignee: Mobil Oil AS
•
Filing: 1983-04-29
•
Granted: 1984-11-13
•
Expires: 2003-04-29
Abstract
Abstract There is disclosed a process for preparing a ZSM-12 crystalline zeolite wherein the organic template used in the synthesis has the formula: <IMAGE> wherein n=4,5,6 or 10. The template, designated herein DABCO-Cn-diquat, is obtained from a dihalide salt of the template or from a hydroxide thereof.
Inventors
- 👤 Guenter H. Kuehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:11
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/7034; C; C01; C01B; C01B39/00; C01B39/02; C01B39/42; Y; Y10; Y10S; Y10S423/00; Y10S423/33
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
A process for preparing a siliceous porous crystalline ZSM-12 zeolite material having the X-ray diffraction pattern of Table II, which comprises preparing a reaction mixture comprised of sources of an alkali or alkaline earth metal, alumina, silica, RN + and water, and having the following composition, in terms of mole ratios of oxides: ______________________________________
OH.sup.- /YO.sub.2
= 0.10 to 0.40
RN.sup.+ /(RN.sup.+ +M)
= 0.2 to 0.95
H.sub.2 O/OH.sup.-
= 20 to 300
YO.sub.2 /W.sub.2 O.sub.3
= 60 to 5000
______________________________________ wherein Y is silicon or germanium, (RN) 2 2+ is DABCO-C n -diquat, having the formula: ##STR5## wherein n is 4,5,6 or 10, M is an alkali or alkaline earth metal, and W is aluminum or gallium, and maintaining the mixture at crystallization conditions until crystals of said zeolite are formed.
Claim 2
Dependent Claim
132 words
A process for preparing a siliceous porous crystalline ZSM-12 zeolite material having the X-ray diffraction pattern of Table II, which comprises preparing a reaction mixture comprised of sources of an alkali or alkaline earth metal, alumina, silica, RN + and water, and having the following composition, in terms of mole ratios of oxides: ______________________________________
OH.sup.- /YO.sub.2
= 0.10 to 0.40
RN.sup.+ /(RN.sup.+ +M)
= 0.2 to 0.95
H.sub.2 O/OH.sup.-
= 20 to 300
YO.sub.2 /W.sub.2 O.sub.3
= 60 to 5000
______________________________________ wherein Y is silicon or germanium, (RN) 2 2+ is DABCO-C n -diquat, having the formula: ##STR5## wherein n is 4,5,6 or 10, M is an alkali or alkaline earth metal, and W is aluminum or gallium, and maintaining the mixture at crystallization conditions until crystals of said zeolite are formed.
Claim 3
Dependent Claim
56 words
A process of claim 1 wherein the mixture has the following composition: ______________________________________
OH.sup.- /YO.sub.2
= 0.15 to 0.30
RN.sup.+ /(RN.sup.+ +M)
= 0.29 to 0.90
H.sub.2 O/OH.sup.-
= 50 to 200
YO.sub.2 /W.sub.2 O.sub.3
= 60 to 500
______________________________________ wherein Y, (RN) 2 2+ , M and W are the same as in claim 1.
Claim 4
Dependent Claim
56 words
A process of claim 2 wherein the mixture has the following composition: ______________________________________
OH.sup.- /YO.sub.2
= 0.17 to 0.25
RN.sup.+ /(RN.sup.+ +M)
= 0.30 to 0.50
H.sub.2 O/OH.sup.-
= 80 to 150
YO.sub.2 /W.sub.2 O.sub.3
= 90 to 300
______________________________________ wherein Y, (RN) 2 2+ , M and W are the same as in claim 1.
Claim 5
Dependent Claim
11 words
A process of claim 3 wherein M is potassium or sodium.
Claim 6
Dependent Claim
9 words
A process of claim 4 wherein M is sodium.
Claim 7
Dependent Claim
48 words
A process of claim 5 wherein the DABCO-C n -diquat is derived from the halogen salt thereof, obtained by reacting two molecules of diazbicyclo (2,2,2) octane with one molecule of dihalo-n-alkane of the formula: X--(CH.sub.2).sub.n --X wherein X is fluorine, chlorine, bromine or iodine and n=4,5,6 or 10.
Claim 8
Dependent Claim
9 words
A process of claim 6 wherein X is bromine.
Claim 9
Dependent Claim
7 words
A process o claim 7 wherein n=5.
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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) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |