INVESTIGADORES
RAMIREZ PASTOR antonio Jose
artículos
Título:
A cluster-exact approximation study of the adsorption of binary mixtures on heterogeneous surfaces
Autor/es:
SANCHEZ VARRETTI, F. O.; BULNES F.; A. J. RAMIREZ-PASTOR
Revista:
APPLIED SURFACE SCIENCE
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2016
ISSN:
0169-4332
Resumen:
The adsorption of binary mixtures on heterogeneous surfaces is studied by a cluster approximation (CA), based on the exact calculation of configurations on finite cells. The substrate is characterized by $n$ types of sites, each with different adsorption energy. The process is monitored through the total and partial isotherms. The theoretical formalism is used to model experimental data of methane-ethane mixtures adsorbed on a template-synthesized carbon. The CA results are compared with the ones corresponding to the well-known Ideal Adsorbed Solution Theory (IAST). Even though a good fitting is obtained from IAST, it is found that CA is a more accurate model to estimate the binary data on the highly heterogeneous carbon sample.
