| HAL : hal-00177988, version 1 |
| DOI : 10.1002/chem.200500559 |
| Fiche détaillée | Récupérer au format |
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| Chemistry - A European Journal 12, 6 (2005) 1760-1766 |
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| Extraction of Lanthanides from Aqueous Solution by Using Room-Temperature Ionic Liquid and Supercritical Carbon Dioxide in Conjunction |
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| Soufiane Mekki1, 2, 3Chien M. Wai4Isabelle Billard1Gilles Moutiers3James Burt4Byunghoon Yoon4Joanna S. Wang4Clotilde Gaillard1Ali Ouadi1Peter Hesemann5 |
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| (28/11/2005) |
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| For the first time, the study of a three-step extraction system of water/ionic liquid/supercritical CO2 has been performed. Extraction of trivalent lanthanum and europium from an aqueous nitric acid solution to a supercritical CO2 phase via an imidazolium-based ionic liquid phase is demonstrated, and extraction efficiencies higher than 87 % were achieved. The quantitative extraction is obtained by using different fluorinated -diketones with and without the addition of tri(n-butyl)phosphate. The complexation phenomenon occurring in the room-temperature ionic-liquid (RTIL) phase was evidenced by using luminescence spectroscopy. |
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| Domaine | : | Chimie/Chimie de coordination Chimie/Génie chimique |
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| carbon dioxide – ionic liquids – lanthanides – metal extraction – supercritical fluids |
| hal-00177988, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00177988 | |
| oai:hal.archives-ouvertes.fr:hal-00177988 | |
| Contributeur : Peter Hesemann | |
| Soumis le : Mardi 9 Octobre 2007, 19:10:19 | |
| Dernière modification le : Mercredi 10 Octobre 2007, 10:54:18 | |