Abstract
The self-assembly method for ZSM-5 nanozeolite syntheses was demonstrated in terms of proposed confined space synthesis. The supersolubilizing reversed micelles formed in neutral oil were confirmed to play a key role of mesoreactors for the confined space ZSM-5 synthesis. The results observed by X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques revealed that both the rates of nucleation and growth and the crystal morphologies in size and shape were controlled well in supersolubilizing reversed micelles and that the approach provided superfine nanozeolite with the crystal sizes and shapes similar to the supersolubilizing reversed micelles. The N2 adsorption results of a typical sample showed that the mesopores and macropores existing in synthesized products were derived from interparticle spaces and the textural mesoporosities were different from those in well-known ordered mesoporous materials. Furthermore, the adsorption/desorption behaviors correlated considerably well with the crystal sizes for all the samples. In addition, the heterogeneous nucleation and growth of nanosized crystals were suggested for understanding of the confined space synthesis in mesoscale reactors.
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