Abstract

The Raman scattering and infrared absorption spectra of dehydrated bare NaEMT and KEMT zeolites were recorded in the mid- and low-frequency region. Molecular dynamics calculations based on a simplified general valence force field, the cation framework and cation—cation interactions reproduced the main structural and dynamic properties of the Na 20EMT and K 20EMT zeolites. The flexibility of the inner void space was studied by considering the diameter and area of the windows connecting two adjacent medium or large cages.

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