CONFINED SPACE SYNTHESIS OF NANO-SIZED ZSM - 5 ZEOLITE

Nanocrystalline ZSM - 5 with SiO2/Al2O3 ratios of 100 and an average crystal size of 27 nm wassuccessfully synthesized by using mesoporous carbon nanotubes as the inert support material and confined spacesynthesis method. The synthesized products are characterized by X - ray power diffraction(XRD), infraredspectroscopy (IR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM),respectively. At the same time, the influence factors on synthesis ,such as hydrolysis time and carbon sourceetc., were investigated. The results show that the synthesized products have nanometer size and the typicalZSM- 5 structural characteristics. The nanocrystals are aggregates of primary global particles. The efficientmethod of purifying carbon nanotubes, hydrolysis time, the proper carbon resource and aluminum resource arefavorable for the formation of nanocrystalline.