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Article Dans Une Revue Electrochimica Acta Année : 2010

Potential Scale for Ion Transfers at the Water/1,6-Dichlorohexane Interface

Résumé

1,6-dichlorohexane (DCH) is a solvent with a low permittivity (ε = 8.8) in which ion-pairing affects electrolytic solutions. This can be noticed from voltammetric experiments at a microinterface between water (W) and DCH. Because most ion-association constants are unknown, the experimental measurements cannot be adequately corrected to calculate standard values for partition parameters, so that only conditional partition potentials can be measured. A formal ion partition potential scale is presented (electrolytes: 10−2MLi2SO4 in W; 10−2MTHATPBCl in DCH) for a few tetraalkylammonium cations and some anions (hexafluorophosphate, perchlorate, picrate).
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Dates et versions

hal-00456936 , version 1 (16-02-2010)

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Mickael Rimboud, Catherine Elleouet, Francois Quentel, Maurice L'Her. Potential Scale for Ion Transfers at the Water/1,6-Dichlorohexane Interface. Electrochimica Acta, 2010, 55, pp.2513-2517. ⟨10.1016/j.elecacta.2009.12.011⟩. ⟨hal-00456936⟩
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