A. V. Sapiga, N. A. Sergeev: NMR Investigation of Natrolite Structure

Crystal Research and Technology

Cryst. Res. Technol. 36 (2001) 875 - Abstract -

A. V. Sapiga, N. A. Sergeev*

Faculty of Physics, Tavrida National University, Crimea, Ukraine
*Institute of Physics, University of Szczecin, Poland

NMR Investigation of Natrolite Structure

The temperature dependencies of NMR spectra of ¹H, ²³Na and ²⁷¹Al nuclei in natrolite Na₂Al₂Si₃O₁₀^.2H₂O have been studied. It has been shown that the model of the normal distribution of the activation energy may be considered as a preferable model for the diffusion of the water molecules in the natrolite. The influence of the water molecule diffusion on the NMR spectra of ²³Na and ²⁷Al has been discussed. It has been established that the internal mobility of aluminium and sodium ions does not occur in natrolite.

Keywords: crystal structure, Nuclear Magnetic Resonance (NMR), natrolite, diffusion, zeolites

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