Abstract
Self-diffusion of n-heptane, as well as of n-heptane/benzene mixtures, in the intercrystalline space of packings of NaX zeolite has been investigated by means of the NMR pulsed field gradient technique. Both the temperature and the concentration dependence of the long-range self-diffusion of single components and the concentration dependence of mixtures in zeolite beds can be described by means of simple theoretical relations. By determination of the long-range self-diffusion coefficients, it is possible to calculate the sorptive separation factors of binary hydrocarbon mixtures with an adequate accuracy.
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