US4241036A
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Synthetic crystalline zeolite and process for preparing same
Assignee: Katalistiks International Inc
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Filing: 1975-10-23
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Granted: 1980-12-23
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Expires: 1995-10-23
Abstract
Abstract A new three-dimensional crystalline zeolite having unique adsorptive properties is prepared hydrothermally from a reaction gel containing tetramethylammonium hydroxide in addition to a source of silica and alumina and sodium hydroxide. The zeolite as crystallized from the reaction system contains tetramethylammonium cations in addition to sodium cations. The zeolite is denominated zeolite OMEGA .
Inventors
- 👤 Edith Flanigen
- 👤 Elsa R. Kellberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:33
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
48 words
A crystalline synthetic zeolitic molecular sieve having a composition expressed in terms of moles of oxides as 1.0±0.5M.sub.2/n O:Al.sub.2 O.sub.3 :5-20SiO.sub.2 :0-10H.sub.2 O wherein M represents at least one action having a valence "n", and having an x-ray powder diffraction pattern essentially as set forth in Table A.
Claim 2
Dependent Claim
48 words
A crystalline synthetic zeolitic molecular sieve having a composition expressed in terms of moles of oxides as 1.0±0.5M.sub.2/n O:Al.sub.2 O.sub.3 :5-20SiO.sub.2 :0-10H.sub.2 O wherein M represents at least one action having a valence "n", and having an x-ray powder diffraction pattern essentially as set forth in Table A.
Claim 3
Dependent Claim
16 words
Composition according to claim 1 wherein "n" has a value of from 1 to 3 inclusive.
Claim 4
Dependent Claim
144 words
A crystalline synthetic zeolitic molecular sieve having a composition expressed in terms of moles of oxides as follows: [xR.sub.2 O+yM.sub.2/n O]:Al.sub.2 O.sub.3 :zSiO.sub.2 :aH.sub.2 O, wherein R represents hydrogen, ammonium, alkylammonium or mixtures thereof, x has a value of from about 0 to about 0.7, m represents at least one alkali metal, alkaline earth metal, transition metal or rare earth element of the lanthanide series, n is the valence of M, y has a value of from about 0.5 to about 1.5, the sum of x and y being from about 0.5 to about 1.5, z represents the number of moles of SiO 2 and has a value of from about 5 to about 20, and a has a value of from about zero to about 10, said zeolitic molecular sieve having an x-ray powder diffraction pattern essentially as set forth in Table A.
Claim 5
Dependent Claim
144 words
A crystalline synthetic zeolitic molecular sieve having a composition expressed in terms of moles of oxides as follows: [xR.sub.2 O+yM.sub.2/n O]:Al.sub.2 O.sub.3 :zSiO.sub.2 :aH.sub.2 O, wherein R represents hydrogen, ammonium, alkylammonium or mixtures thereof, x has a value of from about 0 to about 0.7, m represents at least one alkali metal, alkaline earth metal, transition metal or rare earth element of the lanthanide series, n is the valence of M, y has a value of from about 0.5 to about 1.5, the sum of x and y being from about 0.5 to about 1.5, z represents the number of moles of SiO 2 and has a value of from about 5 to about 20, and a has a value of from about zero to about 10, said zeolitic molecular sieve having an x-ray powder diffraction pattern essentially as set forth in Table A.
Claim 6
Dependent Claim
16 words
The crystalline zeolitic molecular sieve of claim 3 wherein R is tetramethylammonium and M is sodium.
Claim 7
Dependent Claim
46 words
A porous crystalline synthetic zeolitic molecular sieve aluminosilicate having uniform pore diameters of at least 11 Angstroms, and aluminosilicate containing at least some structural tetramethylammonium cations and having an x-ray powder diffraction pattern characterized by at least those interplanar spacing values set forth in Table A.
Claim 8
Dependent Claim
46 words
A porous crystalline synthetic zeolitic molecular sieve aluminosilicate having uniform pore diameters of at least 11 Angstroms, and aluminosilicate containing at least some structural tetramethylammonium cations and having an x-ray powder diffraction pattern characterized by at least those interplanar spacing values set forth in Table A.
Claim 9
Dependent Claim
47 words
A crystalline synthetic zeolitic molecular sieve having a composition expressed in terms of oxides as 1.0±0.5M.sub.2/n :Al.sub.2 O.sub.3 :5-12SiO.sub.2 :0-10H.sub.2 O wherein M represents at least one cation having a valence of "n" and having an x-ray powder diffraction pattern essentially as set forth in Table A.
Claim 10
Dependent Claim
47 words
A crystalline synthetic zeolitic molecular sieve having a composition expressed in terms of oxides as 1.0±0.5M.sub.2/n :Al.sub.2 O.sub.3 :5-12SiO.sub.2 :0-10H.sub.2 O wherein M represents at least one cation having a valence of "n" and having an x-ray powder diffraction pattern essentially as set forth in Table A.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |