Abstract
Adsorption of CHF3 on a NaY5.6 zeolite has been studied by the measurement of H and F NMR of the CHF3 molecule, focusing in particular on the measurements of a chemical shift and a longitudinal relaxation time, together with the adsorption isotherm measurements. A coordination structure of the adsorbed CHF3 is determined from the relationship between a chemical shift and an adsorption amount. Relaxation times of H and F were measured at respective two resonance frequencies for various adsorption amounts and temperatures. These relaxation data have been analyzed by use of the thermally activated diffusion model proposed by Torrey. From these analyses, various microdynamic variables such as a mean life time of the trapped state and a mean jump distance in the diffusion were determined as functions of an adsorption amount and temperature.
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Murata, M.Y., Ishiwata, M. & Yoshida, T. The Adsorption of CHF3 on NaY5.6 Zeolite and Microdynamic Behaviors in Small Pores. Adsorption 9, 153–164 (2003). https://doi.org/10.1023/A:1024245427330
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DOI: https://doi.org/10.1023/A:1024245427330