Title of article :
Quantitative relationship between adsorbed amount of solute and solvent composition
Author/Authors :
Yan Wang، نويسنده , , Xindu Geng، نويسنده , , Don M Zebolsky، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2003
Pages :
5
From page :
13
To page :
17
Abstract :
A new adsorption isotherm that relates the amount of solute adsorbed to the solvent concentration is proposed. The new equation is derived from Geng and Shi’s stoichiometric displacement model for adsorption (SDM-A). The obtained equation may be simplified to an expression containing two parameters. The equation with two parameters, valid for low concentrations of solute, is a logarithmically linear relationship. The intercept contains a thermodynamic equilibrium constant of the solute displacing solvent from the adsorbent. The slope is the negative value of the stoichiometric displacement parameter (Z), the average total number of solvent molecules displaced from an active site on the adsorbent and from the solute. Tests with a homologous series of aromatic alcohols by frontal analysis in reversed phase liquid chromatography demonstrate that experimental results fit the equation well.
Keywords :
Phenyl alcohols , Methanol–water mixed solvent , Solid–liquid adsorption , Stoichiometric displacement , Adsorption isotherm
Journal title :
Thermochimica Acta
Serial Year :
2003
Journal title :
Thermochimica Acta
Record number :
1195888
Link To Document :
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