The framework topology of zeolite beta

The tetrahedral framework structure of zeolite beta is disordered along [001]. The disordered beta framework and three simple ordered polytypes are related through layer displacements on 001 planes. Three mutually perpendicular 12-ring channel systems are characteristic of the three ordered polytypes and the disordered beta structure. The proposed framework structures are consistent with the known diffraction, sorption, and cation-exchange properties of zeolite beta.