Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2121
Title: Kinetic estimation of the adsorbate distribution on the surface from adsorbed amounts
Authors: Polat, Mehmet
Polat, Mehmet
Izmir Institute of Technology. Chemical Engineering
Keywords: Adsorption
Kinetics
Modeling
Multilayers
Issue Date: Jun-2006
Publisher: Elsevier Ltd.
Source: Polat, M. (2006). Kinetic estimation of the adsorbate distribution on the surface from adsorbed amounts. Journal of Colloid and Interface Science, 298(2), 593-601. doi:10.1016/j.jcis.2005.12.055
Abstract: A phenomenological multilayer adsorption model for a well-dispersed, homogeneous, nonporous adsorbent and a molecular adsorbate is presented. The model provides explicit kinetic expressions associating the adsorbed amounts to the fraction of the surface occupied and reduces to the first- and second-order adsorption models for special cases. Parameters of the model are a pair of true rate constants related to the adsorbate-adsorbent and adsorbate-surface adsorbate affinities. A general graphical procedure and analytical equations for special cases are provided to estimate the rate constants from kinetic adsorption data. Data from the adsorption of sodium stearate onto α-alumina from water were used to test the model. The predicted values of the rate constants suggested that the stearate was distributed homogeneously on the alumina surface and essentially adsorbed as a monolayer before starting to form the second layer.
URI: http://doi.org/10.1016/j.jcis.2005.12.055
http://hdl.handle.net/11147/2121
ISSN: 0021-9797
0021-9797
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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