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Liquid/liquid metal extraction: Phase diagram topology resulting from molecular interactions between extractant, ion, oil and water

C. Bauer 1 P. Bauduin 1 Jean-François Dufrêche 2 Thomas Zemb 3 Olivier Diat 1
1 L2IA - Ions aux Interfaces Actives
ICSM - UMR 5257 - Institut de Chimie Séparative de Marcoule
2 LMCT - Modélisation Mésoscopique et Chimie Théorique
ICSM - UMR 5257 - Institut de Chimie Séparative de Marcoule
3 LTSM - Tri ionique par les Systèmes Moléculaires auto-assemblés
ICSM - UMR 5257 - Institut de Chimie Séparative de Marcoule
Abstract : We consider the class of surfactants called “extractants” since they specifically interact with some cations and are used in liquid-liquid separation processes. We review here features of water-poor reverse micelles in water/oil/ extractant systems as determined by combined structural studies including small angle scattering techniques on absolute scale. Origins of instabilities, liquid-liquid separation as well as emulsification failure are detected. Phase diagrams contain the same multi-phase domains as classical microemulsions, but special unusual features appear due to the high spontaneous curvature directed towards the polar cores of aggregates as well as rigidity of the film made by extracting molecules.
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https://hal.umontpellier.fr/hal-02002038
Contributeur : Magali Duvail <>
Soumis le : jeudi 31 janvier 2019 - 14:32:32
Dernière modification le : samedi 6 mars 2021 - 03:12:05

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C. Bauer, P. Bauduin, Jean-François Dufrêche, Thomas Zemb, Olivier Diat. Liquid/liquid metal extraction: Phase diagram topology resulting from molecular interactions between extractant, ion, oil and water. The European Physical Journal. Special Topics, EDP Sciences, 2012, 213 (1), pp.225-241. ⟨10.1140/epjst/e2012-01673-4⟩. ⟨hal-02002038⟩

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