title: Interrelations between Adsorption Energies and Local Isotherms, Local Monolayer Capacities, and Energy Distribution Functions, as Determined for Heterogeneous Surfaces by Inverse Gas Chromatography.
abstract: Physicochemical parameters for adsorption of gases at the submonolayer regions of heterogeneous solid surfaces are measured experimentally as a function of time, and then interrelated as local isotherms &theta; against adsorption energy varepsilon, fractional changes of adsorption sites f(varepsilon)/c*(max) against varepsilon, &theta; against f(varepsilon)/c*(max), and distribution functions &theta; f(varepsilon)/c*(max) over adsorption energy values varepsilon, without using at all the well-known integral equation Theta(p, T)=integral(infinity)(0)&theta;(p, T, varepsilon)f(varepsilon)dvarepsilon and assumptions concerning the pair f(varepsilon) and &theta;(p, T, varepsilon). The method uses only chromatographic experimental data obtained by the inverse gas chromatography technique known as reversed-flow gas chromatography. It has been applied to the adsorption of cis-2-butene and trans-2-butene onto particles of Penteli marble at temperatures of 302, 314, 323, and 333 K. The results obtained are comparable with those calculated on the basis of the well-known integral equation. Copyright 2001 Academic Press.
authors.affiliation: Physical Chemistry Laboratory, University of Patras, Patras, 26504, Greece
authors.forename: Nicholas A.
authors.initials: NA
authors.lastname: Katsanos
authors.forename: Efstathia
authors.initials: E
authors.lastname: Iliopoulou
authors.forename: Vassilis
authors.initials: V
authors.lastname: Plagianakos
authors.forename: Helen
authors.initials: H
authors.lastname: Mangou