DIFFUSION OF BENZENE IN NAX

Fig. 1 Comparison of experimental and simulated self-diffusivities of benzene in NaX zeolite (supercage depicted in inset) vs. inverse temperature for three loadings, 0, indicated. (View this art in color at www.dekker.com.)...

ABSTRACT. The principle features of the frequency-response i paratus developed at Imperial College is described. The apparatus has been used in both its a) full and b) single-step frequency modes to determine the diffiisivities of various hydrocarbons in silicalite-1. Die effect of temperature and loading of sorbate in the silicalite-1 has been ascertained. The effect of the introduction of A1 atoms into the framework of silicalite-1 on the diffusivity of benzene has been detmnined. The diffusion of benzene in NaX has been studied and diffusion coefficients obtained which agree with NMR pulsed field gradient measurements, n-Butane and 2-butyne hydrocarbons were found to generate out-of-phase response curves by the full FR method which could only be fitted by introducing two diffusion coefficients into the solution of the appropriate diffusion equation. 

The diffusion of benzene in NaX zeolite has been investigated. Quadrupo-lar splitting of CeDe in Na-montmorillonitesuspensions has been observed. ... 

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