Synthesis of zeolitic materials using N,N-dimethyl organotemplates

1. A process for the preparation of a zeolitic material having a CHA framework structure wherein said process comprises

(1) providing a mixture comprising

N,N-dimethylpiperidinium hydroxide, and

one of more sources for YO 2 and one or more sources for X 2 O 3 ;

(2) crystallizing the mixture provided in (1);

wherein Y is a tetravalent element, and X is a trivalent element, and

wherein the molar ratio of ammonium cation having the formula (I) to Y in the mixture provided in (1) and crystallized in (2) is equal to or greater than 0.25;

wherein the zeolitic material comprises YO 2 and X 2 O 3 wherein Y is a tetravalent element, and X is a trivalent element, and

wherein the zeolitic material displays a Y:X molar ratio in the range of from 1.5 to 10.5,

wherein the zeolitic material optionally further comprises Z 2 O 5 in addition to YO 2 and X 2 O 3 , wherein Z is a pentavalent element, and

wherein the zeolitic material then displays a Y:nX:pZ molar ratio, the value for the ratio (1+2p):(n−p) is in the range of from 1 to 5.5.

2. The process of claim 1 , wherein Y is selected from the group consisting of Si, Sn, Ti, Zr, Ge, and mixtures of two or more thereof.

3. The process of claim 1 , wherein the one or more sources for YO 2 comprises one or more compounds selected from the group consisting of silicas, fumed silicas, silicates, and mixtures of two or more thereof.

4. The process of claim 1 , wherein X is selected from the group consisting of Al, B, In, Ga, and mixtures of two or more thereof.

5. The process of claim 1 , wherein the one or more sources for X 2 O 3 comprises one or more compounds selected from the group consisting of aluminas, aluminates, and mixtures of two or more thereof.

6. The process of claim 1 , wherein the structure of the zeolitic material further comprises Z 2 O 5 in addition to YO 2 and X 2 O 3 , and wherein the mixture provided in (1) further comprises one or more sources for Z 2 O 5 , wherein Z is a pentavalent element.

7. The process of claim 6 , wherein Z is selected from the group consisting of P, As, Sb, Bi, V, Nb, Ta, and mixtures of two or more thereof.

8. The process of claim 1 , wherein the mixture provided in step (1) further comprises a solvent.

9. The process of claim 8 , wherein the solvent comprises water, and wherein the H 2 O:YO 2 molar ratio of the mixture provided in (1) ranges from 1 to 150 and

wherein the H 2 O:X 2 O 3 molar ratio of the mixture provided in (1) ranges from 100 to 8,000.

10. The process of claim 8 , wherein the solvent comprises water, and wherein the pH of the mixture provided in (1) is in the range of from 8 to 14.

11. The process of claim 1 , wherein the crystallization in step (2) involves heating of the mixture.

12. The process of claim 11 , wherein the heating in step (2) is conducted under solvothermal conditions.

13. The process of claim 11 , wherein the crystallization in (2) involves heating of the mixture for a period ranging from 0.1 to 20 d.

14. The process of claim 1 , further comprising one or more of

(3) isolating the zeolitic material, preferably by filtration,

and/or

(4) washing the zeolitic material,

and/or

(5) drying the zeolitic material.

15. The process of claim 14 , further comprising one or more of

(6) calcining the zeolitic material obtained according to (2) or (3) or (4) or (5),

wherein the steps (3) and/or (4) and/or (5) and/or (6) can be conducted in any order.

16. A synthetic zeolitic material having a CHA framework structure, said zeolitic material being optionally obtainable and/or obtained by a process comprising

(1) providing a mixture comprising N,N-dimethylpiperidinium hydroxide

and one or more sources for YO 2 and one or more sources for X 2 O 3 ;

(2) crystallizing the mixture provided in (1);

wherein Y is a tetravalent element, and X is a trivalent element,

wherein the molar ratio of ammonium cation having the formula (I) to Y in the mixture provided in (1) and crystallized in (2) is equal to or greater than 0.25,

wherein the zeolitic material comprises YO 2 and X 2 O 3 , wherein Y is a tetravalent element and X is a trivalent element, and

wherein the zeolitic material displays a Y:X molar ratio comprised in the range of from 1.5 to 10.5,

wherein when the zeolitic material optionally further comprises Z 2 O 5 in addition to YO 2 and X 2 O 3 , wherein Z is a pentavalent element, and

wherein the zeolitic material then displays a Y:nX:pZ molar ratio, the value for the ratio (1+2p):(n−p) is in the range of from 1 to 5.5.

17. The synthetic zeolitic material of claim 16 , wherein the material comprises one or more zeolites selected from the group consisting of (Ni(deta) 2 )-UT-6, Chabazite, |Li—Na|[Al—Si—O]-CHA, DAF-5, Dehyd. Na-Chabazite, K-Chabazite (Iran), LZ-218, Linde D, Linde R, MeAPSO-47, Phi, SAPO-34, SAPO-47, SSZ-13, SSZ-62, UiO-21, Willhendersonite, ZK-14, ZYT-6, and combinations of two or more thereof.

18. The material of claim 16 , wherein Z is selected from the group consisting of P, As, Sb, Bi, V, Nb, Ta, and mixtures of two or more thereof.

19. The material of claim 16 , wherein the framework structure does not contain a pentavalent element Z in addition to YO 2 and X 2 O 3 .

20. The material of claim 16 , wherein Y is selected from the group consisting of Si, Sn, Ti, Zr, Ge, and mixtures of two or more thereof.

21. The material of claim 16 , wherein X is selected from the group consisting of Al, B, In, Ga, and mixtures of two or more thereof.