Optimization of the Beta Zeolite Synthesis Method

The conditions for the hydrothermal synthesis of industrially significant zeolite with the Beta structure are optimized by reducing the amount of toxic reagents used (tetraethylammonium hydroxide), acting as structure directing agents, reducing the temperature, and shortening the synthesis time relative to the known method. The use of stirring the reaction medium during the synthesis using the Premex Avalon reactor system, the addition of Zeolite Beta seeds, and the aging of the initial gel are considered as factors allowing the optimization of the synthesis conditions. The results of X-ray phase analysis and the study of the morphology of the samples show the possibility of synthesizing zeolite Beta with the average particle diameter of 200 to 300 nm at 130°C for 20 h with a significant decrease (by 75%) in the amount of tetraethylammonium hydroxide in the initial gel relative to the known methods.