US4585639A
Expired / Lapsed
US
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Preparation of crystalline silicate ZSM-12
Assignee: Mobil Oil AS
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Filing: 1984-12-20
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Granted: 1986-04-29
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Expires: 2004-12-20
Abstract
Abstract This invention relates to a new and improved form of crystalline silicate ZSM-12, to a new and useful improvement in synthesizing said crystalline silicate and to use of said crystalline silicate prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
Inventors
- 👤 Rosemarie Szostak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:42
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/42; Y; Y10; Y10S; Y10S423/00; Y10S423/33
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
175 words
A method for synthesizing a crystalline silicate ZSM-12 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, an oxide of aluminum, an oxide of silicon, water and diquaternary cations of the formula (C.sub.2 H.sub.5)(CH.sub.3).sub.2 N.sup.+ (CH.sub.2).sub.m N.sup.+ (CH.sub.3).sub.2 (C.sub.2 H.sub.5), wherein m is 4 or 6, and having a composition, in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 40 to 200 H 2 O/SiO 2 5 to 200 OH - /SiO 2 0.01 to 1.0 M/SiO 2 0.01 to 2.0 R/SiO 2 0.05 to 1.0 wherein M is said alkali metal cation and R is said diquaternary cation, (ii) maintaining the mixture at a temperature of from about 80° C. to about 200° C. until crystals of the crystalline silicate are formed and (iii) recovering the crystalline silicate ZSM-12 from step (ii), said recovered crystalline silicate containing alkali metal and said diquaternary cations.
Claim 2
Independent Claim
175 words
A method for synthesizing a crystalline silicate ZSM-12 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, an oxide of aluminum, an oxide of silicon, water and diquaternary cations of the formula (C.sub.2 H.sub.5)(CH.sub.3).sub.2 N.sup.+ (CH.sub.2).sub.m N.sup.+ (CH.sub.3).sub.2 (C.sub.2 H.sub.5), wherein m is 4 or 6, and having a composition, in terms of mole ratios, within the following ranges: SiO 2 /Al 2 O 3 40 to 200 H 2 O/SiO 2 5 to 200 OH - /SiO 2 0.01 to 1.0 M/SiO 2 0.01 to 2.0 R/SiO 2 0.05 to 1.0 wherein M is said alkali metal cation and R is said diquaternary cation, (ii) maintaining the mixture at a temperature of from about 80° C. to about 200° C. until crystals of the crystalline silicate are formed and (iii) recovering the crystalline silicate ZSM-12 from step (ii), said recovered crystalline silicate containing alkali metal and said diquaternary cations.
Claim 3
Dependent Claim
51 words
The method of claim 1 wherein said mixture has a composition, in terms of mole ratios, as follows: SiO 2 /Al 2 O 3 =60 to 200 H 2 O/SiO 2 =20 to 100 OH - /SiO 2 =0.1 to 0.5 M/SiO 2 =0.1 to 1.0 R/SiO 2 =0.1 to 0.5.
Claim 4
Dependent Claim
66 words
The method of 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, rare earth metals, and metals from Groups IIA, IIIA, IVA, IB, IIB, IIIB, IVB, VIB and VIII of the Periodic Table of Elements.
Claim 5
Dependent Claim
66 words
The method of claim 2 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, rare earth metals, and metals from Groups IIA, IIIA, IVA, IB, IIB, IIIB, IVB, VIB and VIII of the Periodic Table of Elements.
Claim 6
Dependent Claim
15 words
The method of claim 3 wherein said replacing cation is hydrogen or a hydrogen precursor.
Claim 7
Dependent Claim
15 words
The method of claim 4 wherein said replacing cation is hydrogen or a hydrogen precursor.
Claim 8
Dependent Claim
9 words
The recovered crystalline silicate ZSM-12 product of claim 1.
Claim 9
Dependent Claim
9 words
The recovered crystalline silicate ZSM-12 product of claim 2.
Claim 10
Dependent Claim
10 words
The diquaternary cation-containing crystalline silicate ZSM-12 product of claim 3.
Claim 11
Dependent Claim
10 words
The diquaternary cation-containing crystalline silicate ZSM-12 product of claim 4.
Claim 12
Dependent Claim
10 words
The diquaternary cation-containing crystalline silicate ZSM-12 product of claim 5.
Claim 13
Dependent Claim
10 words
The diquaternary cation-containing crystalline silicate ZSM-12 product of claim 6.
Claim 14
Dependent Claim
23 words
Diquaternary cation-containing silicate ZSM-12, said diquaternary cation having the formula (C.sub.2 H.sub.5)(CH.sub.3).sub.2 N.sup.+ (CH.sub.2).sub.m N.sup.+ (CH.sub.3).sub.2 (C.sub.2 H.sub.5), m being 4 or 6.
Claim 15
Dependent Claim
23 words
Diquaternary cation-containing silicate ZSM-12, said diquaternary cation having the formula (C.sub.2 H.sub.5)(CH.sub.3).sub.2 N.sup.+ (CH.sub.2).sub.m N.sup.+ (CH.sub.3).sub.2 (C.sub.2 H.sub.5), m being 4 or 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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |