公开(公告)号：EP2776369A1

公开(公告)日：2014-09-17

申请号：EP12847478.0

申请日：2012-11-09

Applicant: BASF SE

Inventor： MAURER, Stefan ,  JIN, Hanpeng ,  YANG, Jeff ,  MÜLLER, Ulrich

IPC: C01B39/54 ,  C01B39/00 ,  B01J29/85 ,  B01J29/00

CPC classification number: B01J29/7015 ,  B01J2229/186 ,  C01B39/46

Abstract: The present invention relates to an organotemplate-free synthetic process for the production of a zeoiitic material having a CHA-type framework structure comprising YO2, 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 , one or more sources for X
2 O
3 , and seed crystals having a CHA framework structure, wherein the CHA framework structure of the seed crystals comprises YO
2 , X
2 O
3 , and optionally comprises Z2O5; and (2) crystallizing the mixture obtained in step (1 ); wherein Y is a tetravaient element, X is a trivalent element, and Z is a pentavalent element, wherein optionally one or more sources for Z
2 O
5 are further provided in step (1 ), and wherein if the CHA framework of the seed crystals does not contain Z
2 O
5 , the seed crystals then have a Y0
2 : X
2 O
3 molar ratio of 5 or greater than 5.