(588d) Synthesis of Silicalite-1 Nanocrystals in Three Dimensionally Ordered Mesoporous Carbon

Fan, W., University of Massachusetts Amherst
Lee, P., University of Minnesota
Kumar, S., University of Minnesota
Zhang, X., University of Minnesota
Penn, R. L., University of Minnesota
McCormick, A. V., University of Minnesota
Yoo, W. C., University of Minnesota

The sustained interest in the synthesis of zeolite nanocrystals is justified because they can serve as seeds for thin zeolite film growth and for preparation of polymer-zeolite nanocomposite membranes. In this study, silicalite-1 nanocrystals were synthesized inside three-dimensionally-ordered mesoporous (3DOm) carbon with a uniform pore size that can be tuned from 20 nm to 50 nm 1,2. The 3DOm carbon was prepared using ordered arrays of silica nanoparticles (Lys-Sil) as a template. Electron Microscopy, X-ray diffraction and N2 adsorption and desorption reveal that the silicalite-1 nanocrystals can reliably replicate the 3DOm porosity, resulting in the highly monodisperse silicalite-1 nanocrystals with a tunable size from 20 nm to 50 nm. Their application in the fabrication of zeolite thin film will be discussed along with implications in understanding zeolite nucleation and growth.

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