Abstract
IM-5 hollow zeolite spheres (HZSs) were successfully prepared by CTAB improved emulsion system, with the aid of 1,5-bis(methylpyrrolidinium)pentane (1,5-MPP) as a structure-directing agent. The obtained IM-5 HZSs displayed a uniform size about 5μm with polycrystalline IM-5 zeolite wall of 1μm thickness. It was verified that crystallization time and the concentration of CTAB affected the formation process of IM-5 HZSs. Moreover, the IM-5 HZSs were obtained under the conditions of a CTAB concentration of 1.39mol/L and crystallization time of 10–12days. The characterization methods of XRD, Raman, SEM, TEM, N2 sorption isotherms, 27Al, 29Si MAS NMR and Dynamic light-scattering (DLS) were employed to analyze as-prepared samples. The obtained results clarified the “formation of hydrophobic gel particles and crystallization on its surface” crystallization process. This study may provide a facile method to fabricate HZSs.
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