Abstract
In order to reduce the diffusion resistance of the reactants and products in the traditional microporous SSZ-13 zeolite, a hierarchical SSZ-13 zeolite was synthesized with melting-assisted method. The hierarchical SSZ-13 zeolite was easily and quickly synthesized by ammonium fluoride solid-phase grinding under solvent-free condition. The obtained SSZ- 13 samples were characterized by XRD, SEM, BET and EDS. The results clearly indicate that the etched zeolite contains micropores and mesopores, and in addition, no significant decrease of crystallinity is observed for the sample etched with ammonium fluoride. Using this method, other zeolites with CHA, MFI, and TON topologies were etched successfully.
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