Fractional statistics description applied to adsorption of alkane binary mixtures in zeolites.-

M. DÁVILA; J. L. RICCARDO; A.J. RAMIREZ PASTOR

JOURNAL OF CHEMICAL PHYSICS

AMER INST PHYSICS

Año: 2009 vol. 130 p. 174715 - 174724

0021-9606

In the present paper, the multicomponent adsorption of polyatomic species is described as afractional statistics problem, based on Haldane’s statistics. Site exclusion is characterized by a“mutual exclusion matrix” g, which relates to the sizes of the different species and lattice geometry.The adsorption process has been monitored through total and partial isotherms, energy of adsorptionand configurational entropy of the adsorbed phase. The thermodynamic functions calculated for amonomer-dimer mixture were applied to describe the adsorption of methane-ethane mixtures inzeolites. In the case of zero lateral interactions, the present approach was compared to thewell-known ideal adsorbed solution theory. The results show that the treatment of this complexproblem can be significantly simplified if looked up from the new theoretical perspective.