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US4397827A
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Silico-crystal method of preparing same and catalytic conversion therewith
Assignee: Mobil Oil AS
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Filing: 1981-09-17
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Granted: 1983-08-09
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Expires: 2001-09-17
Abstract
Abstract A new porous silico-crystal, designated as ZSM-48, a method of making same and the use thereof in catalytic conversion of organic compounds. The new product has a composition, expressed in terms of moles of anhydrous oxides per 100 moles of silica as follows: (0.05 to 5) N2O: (0.1 to 10)M2/nO: (0 to 4)Al2O3: (100)SiO2 wherein M is at least one cation having a valence n, N is a mixture of C2-C12 alkylamine and more preferably of C3-C5 tetramethyl ammonium compound, and wherein the zeolite is characterized by the distinctive X-ray powder diffraction pattern shown in Table I.
Inventors
- 👤 Pochen Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:32
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/703; C; C01; C01B; C01B37/00; C01B37/02; C01B39/00; C01B39/02; C01B39/46; C01B39/48
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
96 words
A porous silico-crystal ZSM- 48 having a composition expressed in terms of moles of anhydrous oxides, per 100 moles of silica, as follows: (0.05 to 5)N.sub.2 O:(0.1 to 10)M.sub.2 /.sub.n O:(0 to 4)Al.sub.2 O.sub.3 :(100)SiO.sub.2 wherein M is at least one cation having a valence n, N is a mixture of a C 2 -C 12 alkylamine compound and tetramethylammonium compound, and wherein said crystal is characterized by the X-ray diffraction pattern whose values are set forth in Table I of the specification and which exhibits a singlet line within the range of 11.8±0.2 Angstrom units.
Claim 2
Dependent Claim
96 words
A porous silico-crystal ZSM- 48 having a composition expressed in terms of moles of anhydrous oxides, per 100 moles of silica, as follows: (0.05 to 5)N.sub.2 O:(0.1 to 10)M.sub.2 /.sub.n O:(0 to 4)Al.sub.2 O.sub.3 :(100)SiO.sub.2 wherein M is at least one cation having a valence n, N is a mixture of a C 2 -C 12 alkylamine compound and tetramethylammonium compound, and wherein said crystal is characterized by the X-ray diffraction pattern whose values are set forth in Table I of the specification and which exhibits a singlet line within the range of 11.8±0.2 Angstrom units.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 wherein M is an alkali metal cation.
Claim 4
Dependent Claim
32 words
A composition according to claim 1 wherein M is hydrogen, ammonium, or a metal of Groups IIA, IIB, IVA, IIIB, VB, VIB, VIIB and VIII of the Periodic Table or mixtures thereof.
Claim 5
Dependent Claim
13 words
A composition according to claim 3 wherein M comprises a rare earth metal.
Claim 6
Dependent Claim
17 words
A composition according to claim 1 wherein N is a mixture of n-propyl amine and tetramethylammonium chloride.
Claim 7
Dependent Claim
13 words
The crystalline composition produced by thermal treatment of the composition of claim 1.
Claim 8
Dependent Claim
13 words
The crystalline composition produced by thermal treatment of the composition of claim 2.
Claim 9
Dependent Claim
12 words
A composition according to claim 1 wherein substantially no alumina is present.
Claim 10
Dependent Claim
116 words
A method for preparing the porous silico-crystal of claim 1 which comprises preparing a reaction mixture containing a source of silica, an alkali metal oxide, N 2 O, and water and having a composition, in terms of mole ratios of oxides, falling within the following ranges: Al 2 O 3 /SiO 2 : 0 to 0.08 Na 2 O/SiO 2 : 0.01 to 1.0 N 2 O/SiO 2 : 0.005 to 0.5 OH - /SiO 2 : 0.01 to 0.5 H 2 O/SiO 2 : 10 to 200 wherein N is a mixture of C 2 -C 12 alkylamine compound and a tetramethyl ammonium compound, and maintaining said mixture until crystals of said silico-crystal are formed.
Claim 11
Dependent Claim
17 words
A method according to claim 9 wherein N is a mixture of n-propyl amine and tetramethylammonium chloride.
Claim 12
Dependent Claim
37 words
A composition according to claim 1 wherein the original cations have been replaced by hydrogen, ammonium, or a metal of Groups IIA, IIB, IVA, IIIB, VB, VIB, VIIB aand VIII of the Periodic Table or mixtures thereof.
Claim 13
Dependent Claim
14 words
The crystalline composition produced by the thermal treatment of the composition of claim 11.
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) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |