| Abstract: | An estimation procedure of surface diffusion coefficient, Ds, in liquid phase adsorption was proposed. The procedure is based on a restricted diffusion model, in which Ds is correlated with molecular diffusivity by considering a restriction energy due to an adsorptive interaction between adsorbates and adsorbents. In some adsorption systems, Ds of different adsorbates could be calculated with an error less than about 50% from only one datum of each adsorption equilibrium constant. Irrespective of temperature, the procedure, can be applied for the estimation of Ds even in a wide range of Ds of about 4 orders of magnitude. |
