Synthesis of ITE framework type molecular sieves
A method is provided for synthesizing molecular sieves of ITE framework type using one or more of 1-ethyl-1,3,5-trimethylpiperidinium cations and 1-ethyl-1-methyldecahydroquinolinium cations a structure directing agent.
1. A method of synthesizing a molecular sieve of ITE framework type, the method comprising:
(a) providing a reaction mixture comprising:
(1) a source of silicon oxide;
(2) a source of an oxide of a trivalent element (X);
(3) a structure directing agent (Q) comprising one or more of 1-ethyl-1,3,5-trimethylpiperidinium cations and 1-ethyl-1-methyldecahydroquinolinium cations; and
(4) water; and
(b) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the molecular sieve.
2. The method of claim 1 , wherein the reaction mixture has a composition, in terms of molar ratios, as follows:
SiO 2 /X 2 O 3
5 to 100
Q/SiO 2
0.05 to 0.50
H 2 O/SiO 2
10 to 80.
3. The method of claim 1 , wherein the reaction mixture has a composition, in terms of molar ratios, as follows:
SiO 2 /X 2 O 3
20 to 60
Q/SiO 2
0.10 to 0.30
H 2 O/SiO 2
15 to 50.
4. The method of claim 1 , wherein the trivalent element (X) comprises one or more of boron, aluminum, gallium, and iron.
5. The method of claim 1 , wherein the trivalent element (X) comprises boron.
6. The method of claim 1 , wherein the reaction mixture also contains seeds.
7. The method of claim 6 , wherein the reaction mixture comprises from 0.01 to 10,000 ppm by weight of seeds.
8. The method of claim 6 , wherein the seeds comprise a molecular sieve material of ITE framework type.
9. The method of claim 1 , wherein the crystallization conditions include a temperature of from 125° C. to 200° C.
10. A molecular sieve of ITE framework type and, in its as-synthesized form, comprising one or more of 1-ethyl-1,3,5-trimethylpiperidinium cations and 1-ethyl-1-methyldecahydroquinolinium cations in its pores.
11. The molecular sieve of claim 10 , and having a SiO 2 /X 2 O 3 molar ratio of 5 to 100, wherein X is a trivalent element.
12. The molecular sieve of claim 11 , wherein the trivalent element comprises one or more of boron, aluminum, gallium, and iron.
13. The molecular sieve of claim 11 , wherein the trivalent element comprises boron.
14. The molecular sieve of claim 11 , wherein the SiO 2 /X 2 O 3 molar ratio is in a range of 20 to 60.