Electrochemical Behavior of Europium(III)-Europium(II) in LiF-NaF-KF Molten Salt

Tungsten Ion Complexes in a Cationic/Anionic Molten Salt System: Thermodynamic/Dynamic/Simulation Investigation Reveals Configuration-Induced Changes in Reaction

“…The derivation of eq was shown in ref . Initially, the ratio of concentrations was obtained from the peak areas of the SWV curve using the Gaussian fitting method, as this was the standard method of thermodynamic analysis. , The concentration of tungsten ions in the melts can be obtained through ICP–OES analysis. With such established tungsten ion concentrations (see Tables and ), it was possible to use eq for the direct calculation of the Δ E * 0 value. where E p,A and E p,C are the peak potentials of the anode and cathode, respectively, and X is the mole fraction.…”

Evaluation of noble metals as reactive electrodes for separation of lanthanides from molten LiF-BeF2

“…29,30 The reductions of Eu( iii ) and Sm( iii ) involved a two-step reduction mechanism. 10,11,20,26,31 The reduction mechanism of Nd( iii ) in fluoride molten salts seems to be more complicated. Hamel et al reported a mono-step 3-electron transfer mechanism for the reduction of Nd( iii ) in 1083 K LiF-CaF 2 melts, 32 while a multi-step mechanism was reported in a high-temperature (1373 K) LiF-NdF 3 system by Kwon et al 33 Since the thermodynamic data of NdF 2 was not available from the database of the HSC6.0 software and the temperature (873 K) of our evaluation is closer to the temperature of a mono-step process, the reduction mechanism of Nd( iii ) in FLiBe melts was assumed to be one step for the calculation of the reduction potential of Nd.LnF 3 + 1.5Be = Ln + 1.5BeF 2 (Ln = Pr,Gd,Nd)LnF 2 + Be = Ln + BeF 2 (Ln = Eu,Sm)…”

“…The electrochemical investigations are performed in an electrolytic cell setting in a vacuum furnace connected to an argon atmosphere glove box with O 2 and H 2 O lower than 1 ppm. 26 A CHI1140B potentiostat (CHI Instruments) is employed for the electrochemical tests. The 2LiF-BeF 2 (FLiBe) salt is purified using an electrochemical purification method based on a hydrogen electrode 27 with regent grade BeF 2 (FHBI Co., Ltd, 99.0%) and LiF (Shanghai China Lithium Industrial Co., Ltd, 99.9%) as raw materials.…”

Yttria-Stabilized Zirconia Aided Electrochemical Investigation on Ferric Ions in Mixed Molten Calcium and Sodium Chlorides

“…It can comprehensively be judged that the reduction of Fe 3+ corresponding to the peak C1 is a reversible reaction in the melt with 0.5 wt pct Fe2O3 at 1273 K. Thus, within the range of the frequencies measured, the number of exchanged electrons and the diffusion coefficient of Fe 3+ ions can be calculated from Eqs. [3] [53,54,58,60,70,71] and [4], [72][73][74][75][76] respectively, as follows:…”