US4592902A
Expired / Lapsed
US
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Synthesis of crystalline silicate ZSM-5 with an alkyltropinium compound promoter
Assignee: Mobil Oil AS
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Filing: 1985-02-26
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Granted: 1986-06-03
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Expires: 2005-02-26
Abstract
Abstract There is provided a method and a reaction mixture for preparing crystalline silicate having the structure of ZSM-5 with an alkyltropinium directing agent, alkyl being of 2 to 5 carbon atoms.
Inventors
- 👤 Ernest W. Valyocsik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:03
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/36; C01B39/38; C01B39/40; Y; Y10; Y10S; Y10S423/00; Y10S423/22
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
143 words
A method for preparing a crystalline silicate ZSM-5 exhibiting a characteristic X-ray diffraction pattern as shown in Table 1 of the specification, which comprises (i) preparing a mixture capable of forming said crystalline silicate, said mixture comprising sources of alkali metal cations (M), an oxide of silicon, water and alkyltropinium cations (R') having the formula: ##STR3## wherein R is alkyl of 2 to 5 carbon atoms, said mixture having a composition, in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 =20-20,000 H 2 O/SiO 2 =5-200 OH - /SiO 2 =0.001-2.0 M/SiO 2 =0.005-4.0 R'/SiO 2 =0.01-3.0, (ii) maintaining the mixture at a temperature of at least 40° C. until crystals of said crystalline silicate are formed and (iii) recovering said crystalline silicate from step (ii), said recovered crystalline silicate containing alkali metal and said alkyltropinium cations.
Claim 2
Independent Claim
143 words
A method for preparing a crystalline silicate ZSM-5 exhibiting a characteristic X-ray diffraction pattern as shown in Table 1 of the specification, which comprises (i) preparing a mixture capable of forming said crystalline silicate, said mixture comprising sources of alkali metal cations (M), an oxide of silicon, water and alkyltropinium cations (R') having the formula: ##STR3## wherein R is alkyl of 2 to 5 carbon atoms, said mixture having a composition, in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 =20-20,000 H 2 O/SiO 2 =5-200 OH - /SiO 2 =0.001-2.0 M/SiO 2 =0.005-4.0 R'/SiO 2 =0.01-3.0, (ii) maintaining the mixture at a temperature of at least 40° C. until crystals of said crystalline silicate are formed and (iii) recovering said crystalline silicate from step (ii), said recovered crystalline silicate containing alkali metal and said alkyltropinium cations.
Claim 3
Dependent Claim
10 words
A method according to claim 1 wherein M is sodium.
Claim 4
Dependent Claim
45 words
A method according to claim 1 wherein said mixture has a composition, expressed in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 =30-10,000 H 2 O/SiO 2 =10-100 OH - /SiO 2 =0.01-1.0 M/SiO 2 =0.01-2.0 R'/SiO 2 =0.05-1.5
Claim 5
Dependent Claim
10 words
A method according to claim 3 wherein M is sodium.
Claim 6
Dependent Claim
45 words
A method according to claim 1 wherein said mixture has a composition, expressed in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 =60-5,000 H 2 O/SiO 2 =20-60 OH - /SiO 2 =0.1-0.5 M/SiO 2 =0.05-1.0 R'/SiO 2 =0.1-0.6
Claim 7
Dependent Claim
10 words
A method according to claim 5 wherein M is sodium.
Claim 8
Dependent Claim
67 words
A method according to claim 1 comprising replacing alkali metal cations of the crystalline silicate recovered in step (iii), at least in part, by ion exchange with a cation or a mixture of cations selected from the group consisting of hydrogen and hydrogen precursors, rate earth metals, and metals from Groups IIA, IIIA, IVA, IB, IIB, IIIB, IVB, VIB and VIII of the Periodic Table of Elements.
Claim 9
Dependent Claim
16 words
A method according to claim 7 wherein said replacing cation is hydrogen or a hydrogen precursor.
Claim 10
Dependent Claim
9 words
The recovered crystalline silicate ZSM-5 product of claim 1.
Claim 11
Dependent Claim
9 words
The recovered crystalline silicate ZSM-5 product of claim 2.
Claim 12
Dependent Claim
9 words
The recovered crystalline silicate ZSM-5 product of claim 3.
Claim 13
Dependent Claim
9 words
The recovered crystalline silicate ZSM-5 product of claim 4.
Claim 14
Dependent Claim
9 words
The recovered crystalline silicate ZSM-5 product of claim 5.
Claim 15
Dependent Claim
9 words
The recovered crystalline silicate ZSM-5 product of claim 6.
Claim 16
Dependent Claim
10 words
The alkyltropinium cation-containing crystalline silicate ZSM-5 product of claim 7.
Claim 17
Dependent Claim
10 words
The alkyltropinium cation-containing crystalline silicate ZSM-5 product of claim 8.
Claim 18
Dependent Claim
11 words
Alkyltropinium cation-containing Silicate ZSM-5, alkyl being ethyl, propyl, butyl or pentyl.
Claim 19
Dependent Claim
11 words
Alkyltropinium cation-containing Silicate ZSM-5, alkyl being ethyl, propyl, butyl or pentyl.
Claim 20
Dependent Claim
93 words
A reaction mixture capable of forming a crystalline silicate ZSM-5 exhibiting a characteristic X-ray diffraction pattern as shown in Table 1 of the specification, said mixture comprising sources of alkali metal cations (M), an oxide of silicon, water and alkyltropinium cations (R') having the formula: ##STR4## wherein R is alkyl of 2 to 5 carbon atoms, said mixture having a composition, in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 =20-20,000 H 2 O/SiO 2 =5-200 OH - /SiO 2 =0.001-2.0 M/SiO 2 =0.005-4.0 R'/SiO 2 =0.01-3.0.
Claim 21
Dependent Claim
93 words
A reaction mixture capable of forming a crystalline silicate ZSM-5 exhibiting a characteristic X-ray diffraction pattern as shown in Table 1 of the specification, said mixture comprising sources of alkali metal cations (M), an oxide of silicon, water and alkyltropinium cations (R') having the formula: ##STR4## wherein R is alkyl of 2 to 5 carbon atoms, said mixture having a composition, in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 =20-20,000 H 2 O/SiO 2 =5-200 OH - /SiO 2 =0.001-2.0 M/SiO 2 =0.005-4.0 R'/SiO 2 =0.01-3.0.
Claim 22
Dependent Claim
11 words
A reaction mixture according to claim 18 wherein M is sodium.
Claim 23
Dependent Claim
46 words
A reaction mixture according to claim 18 wherein said mixture has a composition, expressed in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 =30-10,000 H 2 O/SiO 2 =10-100 OH - /SiO 2 =0.01-1.0 M/SiO 2 =0.01-2.0 R'/SiO 2 =0.05-1.5.
Claim 24
Dependent Claim
46 words
A reaction mixture according to claim 18 wherein said mixture has a composition, expressed in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 =60-5,000 H 2 O/SiO 2 =20-60 OH - /SiO 2 =0.1-0.5 M/SiO 2 =0.05-1.0 R'/SiO 2 =0.1-0.6.
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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) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |