Adsorption–desorption kinetics of the monomer–dimer mixture

J.A. Boscoboinik, S.J. Manzi and V.D. Pereyra

Physica A: Statistical Mechanics and its Applications, 2010, vol. 389, issue 7, 1317-1328

Abstract: The kinetics of the monomer–dimer mixtures is formulated in the framework of the kinetic lattice gas model. The so-called local evolution rules are used to derive the hierarchy of coupled differential equations for coverage and other correlators, when processes like adsorption, desorption and diffusion are included. The hierarchy of equation is truncated by using mean-field (m,n) closures. Equilibrium properties are analyzed. In particular, adsorption isotherms as a function of the nearest neighbor lateral interaction are presented. The irreversible kinetics are also considered. Temperature-programmed-desorption (TPD) with readsorption is of special interest and this experiment is simulated under different conditions giving different spectra. In these spectra, the influence of adsorbate mobility is analyzed in two dimensions by Monte Carlo simulations.

Keywords: Adsorption; Desorption; Diffusion; Mixture; Monomer–dimer; Kinetic lattice gas model; Monte Carlo; Temperature-programmed-desorption (search for similar items in EconPapers)
Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:389:y:2010:i:7:p:1317-1328

DOI: 10.1016/j.physa.2009.12.018

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