GRANULAR ZEOLITE BEA WITHOUT BINDER WITH HIERARCHICAL POROUS STRUCTURE AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2024 - IPC C01B39/04 

FIELD: various technological processes.

SUBSTANCE: invention relates to synthesis of zeolites. Disclosed is a method of producing binder-free crystalline zeolite BEA. Method involves mixing powdered zeolite BEA and previously obtained amorphous aluminosilicate with molar ratio SiO₂/Al₂O₃ = 12 in such an amount that the total weight content of components in the mixture is: powdered zeolite BEA 50-65%, amorphous aluminosilicate 35-50%, the obtained mixture is moistened by adding water, calcination of moulded granules is carried out at 550-600 °C for 2-5 hours, hydrothermal crystallisation is carried out from reaction mixtures of the following composition: (3.5-5.5)Na₂O⋅(2-4)R⋅Al₂O₃⋅(30-60)SiO₂⋅(600-1200)H₂O, where R is an organic template, at 145±5 °C for 48-72 hours, the obtained granules after double washing with water and drying are calcined at 550-600 °C for 2-5 hours.

EFFECT: simple method of producing zeolite having a high degree of crystallinity and a hierarchical porous structure.

2 cl, 2 dwg, 1 tbl, 12 ex