Open AccessApplication of the Dubinin–Radushkevich Equation for Describing Adsorption from Solutions on to Various Carbons
Author(s) -
A. Dąbrowski,
Krzysztof Nieszporek,
Zygmunt Fekner,
Р. Лебода,
J. K. Garbacz
Publication year - 1993
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/0263617499010001-410
Subject(s) - adsorption , chemistry , thermodynamics , solid surface , homogeneous , molecule , ideal (ethics) , chemical physics , organic chemistry , physics , epistemology , philosophy
Dozens of papers have been published recently describing adsorption processes from solutions on to solid surfaces, but a certain lack of understanding of this problem is still observed. This article deals with the description of adsorption from binary solutions of non-electrolytes on to solids. This description covers adsorption both on homogeneous and heterogeneous surfaces from ideal and non-ideal liquid mixtures. Some important factors determining the adsorption process, i.e. the heterogeneity of the solid surface, interactions between the species in the bulk and surface phases, differences in molecular sizes of the adsorbate molecules, etc., have been discussed. The main attention has been focused on the Dubinin–Radushkevich equation and its application in the description of adsorption from solutions on to energetically, heterogeneous adsorbents. Numerous model calculations have been reported for this equation and several experimental systems have been analyzed. The application of the Dubinin–Radushkevich equation in characterizing liquid adsorption on to various carbons has been demonstrated.