Isobutane apparent activation energy

Figure 5. The FR spectra of the isobutane/H-ZSM-5 diameter. The apparent activation energy of diffusion (E.) of systems at 373 K and 133 isobutane obtained from the Arrhenius plot was 21 kJ mol Pa (A) Z57, (B) Z34 and (Figure 6, open symbols). This value is about three times higher (C) Z15. The sample than that obtained for the diffusion n-butane [12]. At 373 K and amount was 50 mg.

We have tried to estabUsh whether there is any influence of the proposed repulsive interactions on the apparent activation energy for diffusion. In a theoretical study on isobutane diffusion in silicaUte-1 [82], a change in the apparent activation energy was determined. At lower temperatures, the apparent activation energy was lower than at elevated temperatures. This effect was proposed to be caused by repulsive interactions. We determined the ap-... 

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