Influence of the synthesis conditions on the crystallization of zeolite Beta

Crystallization rate, average crystal size, and crystal-size distribution of zeolite Beta have been studied as a function of TEAOH/SiO2 (TEAOH = tetraethylammonium hydroxide) and SiO2/Al2O3 ratios, concentration of the gel, and agitation during crystallization. The influence of these parameters on the nucleation and crystal growth rates and on the chemical composition of the final crystalline material is discussed.