Patent ID: 9527751
Filing Date: 2016-12-27
CPC Classification: B01J,C01B

Claim Text:
1. An organotemplate-free synthetic process for the production of a zeolitic material having a CHA-type framework structure comprising YO 2 , X 2 O 3 , and optionally comprising Z 2 O 5 , 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); wherein Y is a tetravalent element, X is a trivalent element, and Z is a pentavalent element, wherein optionally one or more sources for Z wherein if the CHA framework structure of the seed crystals does not contain Z wherein the mixture provided in step (1) comprises an amount of potassium of 0.001 wt.-% or less.