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Confined water presents unusual properties in comparison with other sorbate species. First of all, the sorption isotherm is of type III, even in the microporous confinement range (Ø < 20 Å). Whatever the pore diameter, water sorption phenomenon looks like the so-called capillary condensation phase transition. Our results clearly valid such an expected behaviour in the mesoporous confinement range...
The vibrational frequencies and diffusivities of N2 and O2 adsorbed in LiLSX have been studied by neutron scattering. Experiments were performed with the single components at 260 K, at various loadings. The stretching frequency of N2 in interaction with Li cations, as observed by inelastic neutron scattering, is compared with quantum chemical calculations. The transport diffusivities of N2 and O2...
Diffusion of linear alkanes in 5A zeolite crystals has been studied by several different experimental techniques. In the range C3–C8 the diffusivity decreases regularly with carbon number (with a corresponding increase in activation energy) and there is good agreement between ZLC values and the data provided by the “microscopic” techniques (PFG NMR and Quasi-Elastic Neutron Scattering). At higher...
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