Process for the production of a zeolitic material via solvent-free interzeolitic conversion

Patent metadata

Field	Value
Publication number	US-10870583-B2
Application number	US-201716463263-A
Country	US
Kind code	B2
Filing date	Dec 13, 2017
Priority date	Dec 21, 2016
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

A process for preparing a zeolitic material containing YO2 and X2O3, where Y and X represent a tetravalent element and a trivalent element, respectively, is described. The process includes (1) a step of preparing a mixture containing one or more structure directing agents, seed crystals, and a first zeolitic material containing YO2 and X2O3 and having FAU-, GIS-, MOR-, and/or LTA-type framework structures; and (2) a step of heating the mixture for obtaining a second zeolitic material containing YO2 and X2O3 and having a different framework structure than the first zeolitic material. The mixture prepared in (1) and heated in (2) contains 1000 wt % or less of H2O based on 100 wt % of YO2 in the framework structure of the first zeolitic material. A zeolitic material obtainable and/or obtained by the process and its use are also described.

First claim

The invention claimed is:

1. A process for preparing a zeolitic material comprising YO 2 and X 2 O 3 in its frame-work structure, wherein Y stands for a tetravalent element and X stands for a trivalent element, said process comprising:
(1) preparing a mixture comprising one or more structure directing agents, seed crystals, and a first zeolitic material comprising YO 2 and X 2 O 3 in its framework structure, wherein the first zeolitic material has at least one framework structure selected from the group consisting of FAU-, GIS-, MOR-, and LTA-type framework structures; and
(2) heating the mixture obtained in (1) for obtaining a second zeolitic material comprising YO 2 and X 2 O 3 in its framework structure, wherein the second zeolitic material obtained in (2) has a different type of framework structure than the first zeolitic material;
wherein the mixture prepared in (1) and heated in (2) contains 1 to 170 wt. % H 2 O based on 100 wt.-% of YO 2 in the framework structure of the first zeolitic material.

2. The process of claim 1 , wherein the second zeolitic material obtained in (2) has a CHA-type framework structure.

3. The process of claim 1 , wherein the one or more structure directing agents comprises one or more tetraalkylammonium cation R 1 R 2 R 3 R 4 N + -containing compounds, wherein R 1 , R 2 , and R 3 independently from one another stand for alkyl, and wherein R 4 stands for cycloalkyl.

4. The process of claim 1 , wherein the one or more structure directing agents comprises one or more tetraalkylammonium cation R 1 R 2 R 3 R 4 N + -containing compounds, wherein R 1 , R 2 , and R 3 independently from one another stand for alkyl, and wherein R 4 stands for adamantyl and/or benzyl.

5. The process of claim 1 , wherein the one or more structure directing agents comprises one or more tetraalkylammonium cation R 1 R 2 R 3 R 4 N + -containing compounds, wherein R 1 , R 2 , R 3 and R 4 independently from one another stand for alkyl, and wherein R 3 and R 4 form a common alkyl chain.

6. The process of claim 1 , wherein Y is selected from the group consisting of Si, Sn, Ti, Zr, Ge, and a mixture thereof.

7. The process of claim 1 , wherein X is selected from the group consisting of Al, B, In, Ga, and a mixture thereof.

8. The process of claim 1 , wherein the heating (2) is conducted at a temperature ranging from 170 to 300° C.

9. The process of claim 8 , wherein the heating (2) is conducted for a period in the range of from 0.1 h to 6 h.

10. The process of claim 1 , further comprising
(3) calcining the second zeolitic material obtained in (2).

11. The process of claim 10 , further comprising
(4) subjecting the zeolitic material obtained in (2) or (3) to an ion-exchange procedure.

12. The process of claim 11 , further comprising
(5) calcining the zeolitic material obtained in (4).

13. The process of claim 1 , wherein the seed crystals comprise a zeolitic material having a CHA-type and/or an AEI-type framework structure.

14. A zeolitic material, obtained according to the process of claim 1 .

15. A molecular sieve, an adsorbent, a catalyst, and/or a catalyst support, comprising the zeolitic material of claim 14 .

Assignees

• Basf Se

Inventors

• Mcguire Robert
• Feyen Mathias
• Mueller Ulrich
• Bao Xinhe
• Zhang Weiping
• De Vos Dirk
• Gies Hermann
• Xiao Feng-Shou
• Yokoi Toshiyuki
• Kolb Ute
• Marler Bernd
• Shi Chuan
• Pan Xiulian
• Meng Xiangju
• Maurer Stefan
• Dai Yu
• Wang Yong
• De Baerdemaeker Trees

Classifications

• Y02P20/151

  Reduction of greenhouse gas [GHG] emissions, e.g. CO2 · CPC title

• Y02C20/10

  of nitrous oxide (N2O) · CPC title

• C01P2002/86

  by NMR- or ESR-data · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• B01J35/633

  less than 0.5 ml/g · CPC title