The extraction pathway of lanthanide ions from simulated nuclear waste solutions and the synergistic effects of a calixarene and a cobalt dicarbollide anion (CD) have been investigated on a model system by the combined use of electrospray ionization MS, FTMS ICR, together with 1H and 11B high field NMR spectroscopy techniques. Moreover, the extracting capabilities of the calixarene/BrCD mixture were determined by liquid–liquid extraction tests. An enhanced extraction efficiency of the calixarene/BrCD mixture with respect to the calixarene alone was observed. MS analysis allowed the assessment of a supramolecular ternary association, while the NMR data gave information on the calixarene binding sites for lanthanide ions. Herein, we report the experimental evidence of the formation of a ternary lanthanide/calixarene/Co-dicarbollide aggregate, which allowed us for the first time to assess the mechanism of the synergistic action of calixarenes and CD anions in lanthanide ion extraction.

Assessing the Mechanism of the Synergistic Action of Calixarenes and Co-dicarbollides in Lanthanides Extraction / E. Macerata; F. Castiglione; W. Panzeri; M. Mariani; F. Sansone; A. Casnati; A. Mele. - In: NEW JOURNAL OF CHEMISTRY. - ISSN 1144-0546. - 34(2010), pp. 2552-2557. [10.1039/c0nj00269k]

Assessing the Mechanism of the Synergistic Action of Calixarenes and Co-dicarbollides in Lanthanides Extraction

SANSONE, Francesco;CASNATI, Alessandro;
2010

Abstract

The extraction pathway of lanthanide ions from simulated nuclear waste solutions and the synergistic effects of a calixarene and a cobalt dicarbollide anion (CD) have been investigated on a model system by the combined use of electrospray ionization MS, FTMS ICR, together with 1H and 11B high field NMR spectroscopy techniques. Moreover, the extracting capabilities of the calixarene/BrCD mixture were determined by liquid–liquid extraction tests. An enhanced extraction efficiency of the calixarene/BrCD mixture with respect to the calixarene alone was observed. MS analysis allowed the assessment of a supramolecular ternary association, while the NMR data gave information on the calixarene binding sites for lanthanide ions. Herein, we report the experimental evidence of the formation of a ternary lanthanide/calixarene/Co-dicarbollide aggregate, which allowed us for the first time to assess the mechanism of the synergistic action of calixarenes and CD anions in lanthanide ion extraction.
Assessing the Mechanism of the Synergistic Action of Calixarenes and Co-dicarbollides in Lanthanides Extraction / E. Macerata; F. Castiglione; W. Panzeri; M. Mariani; F. Sansone; A. Casnati; A. Mele. - In: NEW JOURNAL OF CHEMISTRY. - ISSN 1144-0546. - 34(2010), pp. 2552-2557. [10.1039/c0nj00269k]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2312989
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