Adsorption and transport of Polyatomic Species in One- dimensional Systems: Exact forms of the Thermodynamic functions and Chemical Diffusion

RAMIREZ PASTOR A. J.; ROMÁ F.; ALIGIA A.; PEREYRA V.; RICCARDO J. L.

Ottawa

Otro; Studies in Surfaces Science and Catalysis; 2000

University of Ottawa

The thermodinamic functions of k- mers adsorbed in a simple of quasi- one- dimensional nanotubes` s adsorption potencial are exactly evaluated. The adsorption sites are assumed to lie in a regular one- dimensional space, and calculations are carried our in the lattice- gas approximation. The coverage and temperatura dependence of the free energy, chemical potencial and entropy are given. The collective relaxation of density fluctuations is addressed; the dependence of chemical difusión coefficient on coverage and adsorbate size is calculated rigorously and related to features of the configurational entropy.