Acid-Base Behavior of Two Isomeric Organ Phosphorus Extractants in a Biphasic Liquid System: Cobalt Extraction Test

Authors

Khayra Mersellem
Laboratory of applied organic synthesis, University of Oran1, Algeria
Djamila Bouazza
Materials Chemistry Laboratory, University of Oran1., Algeria
Hafida Miloudi
Materials Chemistry Laboratory, University of Oran1., Algeria
Pedro Maireles-Torres
Department of Inorganic Chemistry, Crystallography and Mineralogy, Faculty of Science, University of Malaga, Spain

Synopsis

The effect of the diluents on the acido- basic behavior of two isomeric organophosphorus acids   Cyanex 272 (bis (2, 4, 4-trimethylpentyl) phosphinic acid) and DIOPA (diisooctyl phosphinic acid) in a system with two phases was studied separately by potentiometry in different media (sulfate, nitrate, perchlorate). The values of pKA of these two ligands were calculated and follow the decreasing sequence, regardless of the medium, for : Cyanex 272: Chloroform >dichloromethane >toluene >cyclohexane >1, octanol  DIOPA: chloroform > dichloromethane > toluene > cyclohexane >1, octanol. Encouraging results have been obtained for the extraction of cobalt in biphasic medium chloroform-water, by these two ligands.

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Publication
Abstracts of the Second International Congress on Energy and Industrial Processes Engineering: Volume 2
PDF
Published
December 9, 2024
Series
AIJR Abstracts
Copyright (c) 2024 held by the author(s) of the individual abstract
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