SYNTHESES OF FERRIERITE, ZSM-48, AND ZSM-5 IN GLYCEROL SOLVENT

The mixtures of SiO2, Al2O3, and Na2O with various batch compositions have been allowed to react in glycerol solvent at 210-degrees-C for 7- 14 d. Consequently, the crystallization fields of three kinds of zeoli tes of ferrierite, ZSM-48, and ZSM-5 in addition to sodalite were newl y discovered. Ferrierite was obtained at lower molar percentages of Al 2O3 and Na2O than was sodalite. ZSM-48 and ZSM-5 were obtained at much lower molar percentages of Al2O3 than was ferrierite. Glycerol was fo und to act as both a solvent and a template from the fact that these z eolites encapsulated glycerol molecules in their framework. The compar ison with the crystallization of zeolitic phases in aqueous solvent wi thout using organic templates suggested the availability of glycerol f or the syntheses of ferrierite, ZSM-48, and sodalite.