INFAP 20938
INSTITUTO DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Unidad Ejecutora - UE
artículos
Título:
Modeling multilayer adsorption of interacting polyatomic species on heterogeneous surfaces
Autor/es:
F. O. SÁNCHEZ VARRETTI; G. D. GARCIA; RAMIREZ PASTOR A. J.
Revista:
PHYSICA A - STATISTICAL AND THEORETICAL PHYSICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 391 p. 1158 - 1171
ISSN:
0378-4371
Resumen:
In the present work, a generalized lattice-gas model to study multilayer adsorptionof interacting polyatomic species on heterogeneous surfaces is introduced. Using anapproximation in the spirit of the well-known BrunauerEmmetTeller (BET) model, anew theoretical isotherm is obtained in one- and two-dimensional lattices and comparedwith Monte Carlo simulation. In addition, the BET approach is used to analyze theseisotherms and to estimate the monolayer volume. In all cases, the application of theBET equation leads to an underestimate of the true monolayer capacity. However,significant compensation effects were observed for heterogeneous surfaces and attractivelateral interactions.
