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Diffusion of cyclohexane in mesoporous silica materials with different degrees of surface silanization has been probed by means of pulsed field gradient nuclear magnetic resonance. The self-diffusion coefficients have been measured at various pore fillings from about 10% of one monolayer coverage to complete pore saturation by the capillary-condensed phase. It is found that the surface modification,...
The geometry of particles is analyzed by the example of a model porous system (filling of glass spheres and glass cylinders) studied by nuclear magnetic resonance. The experimental approach is based on the registration of the <Gint> (ζ) dependences, where <Gint> is the effective (average) internal magnetic field gradient and ζ=<r2>1/2<R> is the ratio of the root-mean-square...
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