DETERMINATION OF SURFACE FREE-ENERGY COMPONENTS FOR HETEROGENEOUS SOLIDS BY MEANS OF INVERSE GAS-CHROMATOGRAPHY AT FINITE-CONCENTRATIONS

Authors
BOGILLO VI SHKILEV VP VOELKEL A
Citation
Vi. Bogillo et al., DETERMINATION OF SURFACE FREE-ENERGY COMPONENTS FOR HETEROGENEOUS SOLIDS BY MEANS OF INVERSE GAS-CHROMATOGRAPHY AT FINITE-CONCENTRATIONS, Journal of materials chemistry (Print), 8(9), 1998, pp. 1953-1961
Citations number
38
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Journal of materials chemistry (Print) → ACNP
ISSN journal
09599428
Volume
8
Issue
9
Year of publication
1998
Pages
1953 - 1961
Database
ISI
SICI code
0959-9428(1998)8:9<1953:DOSFCF>2.0.ZU;2-7
Abstract
The approach for calculating the adsorption free energy and adsorption energy distributions for a heterogeneous solid surface as the sum of two uniform functions directly from co-ordinates of the tail of the pr obe's chromatographic peak is presented and discussed. Distribution fu nctions are derived from data collected for the series of test adsorba tes (n-alkanes C-5-C-10 and five polar organic compounds) by means of inverse gas chromatography at finite concentrations. Average dispersiv e components of surface free energy and the donor/acceptor components of the adsorption energy in the monolayer region for the parent and mi xed Si and Al pyrogenic oxides are also determined and discussed.