ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Isosteric adsorption heats in correlation with activation energy of diffusion

Z. Sedláček

Department of Physical Chemistry, Institute of Chemical Technology, 166 28 Prague

Abstract: From the dependence of diffusion coefficients on temperature it is possible to calculate the activation energy of transfer of the adsorbate in pores. For small values of the adsorption of propane on active carbon Supersorbon the activation energy of transfer is equal to the adsorption isosteric heat. At higher adsorption values, even the surface diffusion may play a role, •i.e. the activation energy is approximately equal to a half of the isosteric heat. For pentane, hexane, heptane, benzene, and cyclohexane the activa­tion energy of transfer is equal to a half of the isosteric heat.

Full paper in Portable Document Format: 293a344.pdf

Chemical Papers 29 (3) 344–349 (1975)