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US4528171A
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Zeolite and process for preparing the same
Assignee: Imperial Chemical Industries Ltd
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Filing: 1982-04-12
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Granted: 1985-07-09
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Expires: 2002-04-12
Abstract
Abstract A synthetic zeolite material, designated zeolite EU-4, having a molar composition expressed by the formula: O to M2O:aY2O3:at least 100 XO2:0 to 35 H2O wherein M is a monovalent cation or 1/n of a cation of valency n, a is from 0 to 9, X is silicon and/or germanium, Y is one or more of aluminum, iron, chromium, vanadium, molybdenum, arsenic, antimony, manganese, gallium or boron, and H2O is water of hydration additional to water notionally present when M is H, and having a defined X-ray diffraction pattern is prepared from an aqueous reaction mixture containing the oxide XO2, optionally the oxide Y2O3 and an alkyltrimethylammonium or dialkyldimethylammonium compound. Zeolite EU-4 is a useful catalyst for methanol conversion and the like.
Inventors
- 👤 John L. Casci
- 👤 Barrie M. Lowe
- 👤 Thomas V. Whittam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:46
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/46; C01B39/48; B; B01; B01J; B01J29/00; B01J29/04; C01B37/00; C01B37/02; C07; C07C; C07C1/00; C07C1/20; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/70; Y; Y10; Y10S; Y10S423/00; Y10S423/36
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
A synthetic zeolite material having a molar composition expressed by the formula: 0 to 9M.sub.2 O:aY.sub.2 O.sub.3 :at least 100XO.sub.2 :0 to 35H.sub.2 O wherein M is a monovalent cation or 1/n of a cation of valency n, a is from 0 to 9, X is silicon and/or germanium, Y is one or more of aluminium, iron, chromium, vanadium, molybdenum, arsenic, antimony, manganese, gallium or boron, and H 2 O is water of hydration additional to water notionally present when M is H, and having an X-ray pattern substantially as set out in Table 1.
Claim 2
Dependent Claim
95 words
A synthetic zeolite material having a molar composition expressed by the formula: 0 to 9M.sub.2 O:aY.sub.2 O.sub.3 :at least 100XO.sub.2 :0 to 35H.sub.2 O wherein M is a monovalent cation or 1/n of a cation of valency n, a is from 0 to 9, X is silicon and/or germanium, Y is one or more of aluminium, iron, chromium, vanadium, molybdenum, arsenic, antimony, manganese, gallium or boron, and H 2 O is water of hydration additional to water notionally present when M is H, and having an X-ray pattern substantially as set out in Table 1.
Claim 3
Dependent Claim
30 words
A synthetic zeolite material according to claim 1 having a molar composition expressed by the formula: 0 to 9M.sub.2 O:0 to 2.5Y.sub.2 O.sub.3 :at least 100XO.sub.2 :0 to 35H.sub.2 O.
Claim 4
Dependent Claim
27 words
A synthetic zeolite material according to claim 1 or claim 2 wherein M is hydrogen resulting from the calcination of the material in the presence of air.
Claim 5
Dependent Claim
136 words
A method of making a synthetic zeolite as defined in claim 1 or claim 2 which comprises reacting an aqueous mixture comprising at least one oxide XO 2 , optionally at least one oxide Y 2 O 3 and a propyltrimethylammonium compound, the mixture having the molar composition: XO 2 /Y 2 O 3 : at least 10 OH/XO 2 : 0.1 to 6.0 (M 1 +Q + )/XO 2 : 0.05 to 2.0 Q + /(M 1 + +Q + ): 0.1 to 1.0 H 2 O/XO 2 : 1 to 100 M 2 Z/H 2 O: 10 -4 to 0.5 wherein X and Y have the meanings given in claim 1, M 1 and M 2 are alkali metal, ammonium or hydrogen, Q is a propyltrimethylammonium compound and Z is a strong acid radical.
Claim 6
Dependent Claim
17 words
A method according to claim 4 wherein XO 2 /Y 2 O 3 is at least 40.
Claim 7
Dependent Claim
18 words
A method according to claim 4 wherein OH - /XO 2 is in the range 0.1 to 1.0.
Claim 8
Dependent Claim
20 words
A method according to claim 4 wherein M 2 Z/H 2 O is in the range 10 -2 to 0.3.
Claim 9
Dependent Claim
15 words
A catalyst comprising a synthetic zeolite material as claimed in claim 1 or claim 2.
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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) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |