Study of the influence of extra-framework cations and organic templates on zeolite crystallization in SiO2-Al2O3-Na2O-K2D (R2O, RO) systems

摘要

Crystallization of zeolites from the gels of the (3-x)De(2)D-xR(2)O(RO)-0.05Na(2)O-Al2O3-5SiO(2)-100H(2)O composition where x was varied from 0 to 3 and R = Li, Na, Rb, Cs, Ba, tetraethylammonium, tetrapropylammonium, and tetrabutylammonium, has been performed by hydrothermal synthesis. The influence of various cationic ratios on the final product of crystallization depending on the synthesis temperature has been studied at constant SiO2: A(2)lO(3) and H2O: SiD2 ratios. The correlation between the cationic composition of the initial gels, their structure, and the structure of the crystallizing zeolites has been estimated.