Synthesis of sodalite by dry powder method

摘要

The family of zeolites that can be synthesized by the new dry powder method was extended from pentasil zeolites to sodalite having the structure composed of 4- and 6-member rings. Sodalite samples were prepared in two different dry powder systems, one was based on Na_2O-SiO_2- Al_2O_3 mixture by using ethanolamine (EA), and the other was in Na_2O-NaF- SiO_2-Al_2O_3-EDA system. The template was introduced into the synthesis System via vapor adsorption. The X-ray diffraction patterns, scanning Electron microscopy images, and infrared absorption spectra of as-made Products were presented for identification and comparison.