| abstract |
The present invention is a method for producing a zeolitic material having a CHA-type framework structure containing YO 2 and X 2 O 3 , The method comprises (1) one or more YO 2 sources, one or more X 2 O 3 sources, one or more optionally substituted ethyltrimethylammonium cation-containing compounds, and one or more tetraalkylammonium as a structure directing agent Supplying a mixture comprising a cation R 1 R 2 R 3 R 4 N + -containing compound; (2) a step of crystallizing the mixture obtained in step (1) in order to obtain a zeolitic material having a CHA-type framework structure; Including In the formula, Y is a tetravalent element, X is a trivalent element, R 1 , R 2 , and R 3 independently represent alkyl, R 4 represents cycloalkyl, and the YO 2 : X 2 O 3 molar ratio of the mixture in (1) is 2 to 1000 As well as the zeolitic materials obtainable according to said process and their method of use. |