Process for the production of the cha-aft zeolite intergrowth coe-10 and use thereof in heterogeneous catalysis

A synthetic zeolitic material comprising one or more zeolite intergrowth phases of one or more zeolites having a CHA-type framework structure and one or more zeolites having an AFT-type framework structure, wherein the synthetic zeolitic material is obtainable and/or obtained according to a process comprising:

• (1) preparing a mixture comprising one or more sources for SiO2, one or more sources for X2O3, and seed crystals comprising a zeolitic material, said zeolitic material comprising SiO2 and X2O3 in its framework structure and having a CHA-type framework structure;
• (2) heating the mixture prepared in (1) for obtaining a zeolitic material comprising one or more zeolite intergrowth phases of one or more zeolites having a CHA framework structure and one or more zeolites having an AFT-type framework structure;
• and
• (R) subjecting the zeolitic material obtained in (2) to a procedure for removing at least a portion of X from the framework structure of the zeolitic material.