Synthesis of Beta/MCM-41 composite molecular sieve with high hydrothermal stability in static and stirred condition

Beta/MCM-41 micro/mesoporous composite materials have been prepared through assembly of zeolite Beta nanoclusters and their hydrolysis products in the presence of CTAB under static or stirred conditions. The resulting materials were characterized by powder XRD, TEM and nitrogen adsorption–desorption. Hydrothermal stability of the obtained Beta/MCM-41 composites was evaluated by boiling in distilled water for different periods of time under refluxing. All materials exhibit very high hydrothermal stability.

Schematic illustration of the preparation of composite material.Figure optionsDownload as PowerPoint slide