ChemNet
 
Previous article Next article Contents  

T. D. Khokhlova

Adsorption of dyes on alumina modified with oleine acid

Abstract

Adsorption of water-soluble dyes on alumina modified with oleic (cis-9-octadecanoic) acid is investigated. Content of the modifier on the alumina surface is 5,4 ìmol/m2. Adsorption activity of the alumina is increased greatly after its modification. Effects of pH, addition of neutral electrolyte and organic solvent on adsorption of acid, basic and acid-basic dyes is studied. The greatest adsorption of rhodamines B and 6G at pH 10, but of acid orange at pH 2 is observed. Introduction of sodium chloride and isopropanol in solution reduced adsorption of dyes. The role of ionic and hydrophobic interactions in adsorption is considered.
Moscow University Chemistry Bulletin.
2006, Vol. 47, No. 5, P. 335
   

Copyright (C) Chemistry Dept., Moscow State University, 2002
   Overview
   Editorial board
   Tables of Contents
   Subscription

The site is supported by Russian Foundation for Basic Research
  The using of published on this page materials is not allowed without special permission
Copyright (C) Chemisty Department of Moscow State University
Web-Editor: B.I.Pokrovskii
Web-design: Copyright (C) MIG and VVM
webmaster@www.chem.msu.su