Studies on crystallization of ZSM-12 type zeolite

Summary Formation of ZSM-12 zeolite in aluminosilicate system in presence of N(Et) 4 Br as an organic template was studied. The influence of nature of silica source, concentration of chemical ingredients in reaction mixture, the nature of the element other than aluminum, parameters of hydrothermal synthesis on phase composition of the product was examined. Solid phase transformation mechanism is proposed for ZSM-12 formation in the studied system. Pore-filling function of the template is shown. Peculiarities of ZSM-12 crystallization are related with structural features of this zeolite.