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Article dans une revue
Strontium selectivity in sodium nonatitanate Na4Ti9O20·xH2O
Abstract : We study the extraction of strontium by sodium nonatitanate powder from nitrate strontium and acetate sodium mixture. Experiments show that adsorption is quantitative. The excess Gibbs free energy has been modeled by various models (ideal, 2D Coulomb, regular solution model) for the solid phase. We find that the free energy of the solid phase is controlled by short-range interactions rather than long-ranged Coulombic forces. The selectivity is the consequence of a competition between the liquid and solid phases: both phases prefer strontium rather than sodium but the solid contribution is predominant.
https://hal.umontpellier.fr/hal-02000305
Contributeur : Magali Duvail <>
Soumis le : mercredi 30 janvier 2019 - 15:05:20
Dernière modification le : mercredi 14 avril 2021 - 03:40:49
Contributeur : Magali Duvail <>
Soumis le : mercredi 30 janvier 2019 - 15:05:20
Dernière modification le : mercredi 14 avril 2021 - 03:40:49