Molecular sieve SSZ-121, its synthesis and use
A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-121, is provided. SSZ-121 can be synthesized using 1,3-bis(1-adamantyl)imidazolium cations as a structure directing agent. SSZ-121 may be used in organic compound conversion reactions and/or sorptive processes.
1. A molecular sieve having, in its calcined form, a powder X-ray diffraction pattern with at least the following 2-theta scattering angles: 6.5±0.2, 9.5±0.2, 13.0±0.2, 18.5±0.2, 19.8±0.2, 21.2±0.2, 24.0±0.2, 25.0±0.2, 26.5±0.2, 28.5±0.2 and 30.0±0.2 degrees 2-theta.
2. The molecular sieve of claim 1 , and having a composition comprising the molar relationship:
Al 2 O 3 :( n )(SiO 2 +GeO 2 )
wherein n is ≥30.
3. The molecular sieve of claim 1 , and having a composition comprising the molar relationship:
Al 2 O 3 :( n )(SiO 2 +GeO 2 )
wherein n is ≥50.
4. A molecular sieve having, in its as-synthesized form, a powder X-ray diffraction pattern with at least the following 2-theta scattering angles: 6.3±0.2, 7.0±0.2, 9.5±0.2, 13.0±0.2, 16.0±0.2, 18.5±0.2, 19.8±0.2, 21.2±0.2, 24±0.2, 25.0±0.2, 26.5±0.2, 28.5±0.2 and 30.0±0.2 degrees 2-θ.
5. The molecular sieve of claim 4 , having a chemical composition comprising the following molar relationship:
(SiO 2 + GeO 2 )/Al 2 O 3
≥30
Q/(SiO 2 + GeO 2 )
>0 to 0.1
wherein Q comprises 1,3-bis(1-adamantyl)imidazolium cations.
6. The molecular sieve of claim 4 , having a chemical composition comprising the following molar relationship:
(SiO 2 + GeO 2 )/Al 2 O 3
≥50
Q/(SiO 2 + GeO 2 )
>0 to 0.1
wherein Q comprises 1,3-bis(1-adamantyl)imidazolium cations.
7. A method of synthesizing the molecular sieve of claim 4 , the method comprising:
(1) preparing a reaction mixture comprising:
(a) a FAU framework type zeolite;
(b) a source of germanium;
(c) a structure directing agent comprising 1,3-bis(1-adamantyl)imidazolium cations (Q);
(d) a source of fluoride ions; and
(e) water; and
(2) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the molecular sieve.
8. The method of claim 7 , wherein the reaction mixture has a composition, in terms of molar ratios, as follows:
(SiO 2 + GeO 2 )/Al 2 O 3
30 to 600
Q/(SiO 2 + GeO 2 )
0.10 to 1.00
F/(SiO 2 + GeO 2 )
0.10 to 1.00
H 2 O/(SiO 2 + GeO 2 )
2 to 10.
9. The method of claim 7 , wherein the reaction mixture has a composition, in terms of molar ratios, as follows:
(SiO 2 + GeO 2 )/Al 2 O 3
60 to 500
Q/(SiO 2 + GeO 2 )
0.20 to 0.70
F/(SiO 2 + GeO 2 )
0.20 to 0.70
H 2 O/(SiO 2 + GeO 2 )
4 to 8.
10. The method of claim 7 , wherein the FAU framework type zeolite is zeolite Y.
11. The method of claim 7 , wherein the crystallization conditions include a temperature of from 100° C. to 200° C.
12. The method of claim 7 , wherein the reaction mixture has a molar ratio of Q/F in a range of from 0.8 to 1.2.
13. A process for converting a feedstock comprising an organic compound to a conversion product, the process comprising contacting the feedstock at organic compound conversion conditions with a catalyst comprising the molecular sieve of claim 1 .