Patent ID: 9636667
Date: 2017-05-02
CPC Classifications: B01D,B01J,C01B,Y02C,Y02P

Claim:
1. A process for the preparation of a zeolitic material having a CHA-type framework structure comprising YO 2 and X 2 O 3 , wherein said process comprises the steps of: (1) providing a mixture comprising one or more sources for YO (2) crystallizing the mixture obtained in step (1) for obtaining a zeolitic material having a CHA-type framework structure; wherein Y is a tetravalent element and X is a trivalent element, wherein the mixture provided in step (1) further comprises seed crystals, wherein R 1 , R 2 , and R 3 independently from one another stand for alkyl, wherein R 4 stands for cycloalkyl, and wherein the mixture provided in step (1) does not contain any substantial amount of a source for Z 2 O 5 , wherein Z is P, and wherein the one or more tetraalkylammonium cation R 1 R 2 R 3 R 4 N + -containing compounds comprises one or more N,N,N-trimethyl-cyclohexylammonium compounds.