Author details

The results obtained show the shift of the partial enthalpy change of mixing toward more positive values with increasing concentration of indium in the binary alloys. A threedimensional logΘLa=<sup>U</sup> � Cð Þ Ga�In � 1=Tgraph showing the relationship between La/U separation factor, In concentration in Ga-In solvent alloy, and temperature for molten Me-(Ga-In)/ 3LiCl-2KCl system is presented in Figure 8 and is described by the following equation:

The basic thermodynamic properties of lanthanum, neodymium, and uranium in liquid Ga-In and Ga-Al alloys between 723 and 823 K were determined. Low values of the activity coefficients showed strong interaction between lanthanides and the liquid alloys. The values of uranium and lanthanide separation factors showed that the alloys investigated here have considerable advantage compared to liquid cadmium. Analysis of the data obtained showed that Ga-In and Ga-Al alloys are the prospective media for application in partitioning technol-

The reported study was funded by RFBR according to the research project No. 17-03-00694.

where C is the concentration of In in Ga-In alloy (wt.%).

120 Uranium - Safety, Resources, Separation and Thermodynamic Calculation

ogies of spent nuclear fuels and nuclear waste treatment.

Figure 8. Three-dimensional logΘU/La � C(Ga–In) � 1/T graph for U/La couple.

4. Conclusions

Acknowledgements

log <sup>Θ</sup><sup>U</sup>=La <sup>¼</sup> <sup>1935</sup> <sup>þ</sup> <sup>184</sup> � <sup>C</sup> � <sup>2</sup> � <sup>C</sup><sup>2</sup> <sup>=</sup><sup>T</sup> <sup>þ</sup> <sup>2</sup>:<sup>33</sup> � <sup>0</sup>:<sup>246</sup> � <sup>C</sup> <sup>þ</sup> <sup>0</sup>:<sup>002</sup> � <sup>C</sup><sup>2</sup> (62)

Valeri Smolenski1,2\*, Alena Novoselova1,2, Alexander Bychkov3 , Vladimir Volkovich<sup>4</sup> , Yana Luk'yanova5 and Alexander Osipenko<sup>5</sup>

\*Address all correspondence to: smolenski.valeri@gmail.com

1 Institute of High-Temperature Electrochemistry UB RAS, Ekaterinburg, Russia

2 College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, P.R. China

3 National Research Nuclear University - MEPhI, Moscow, Russia

4 Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, Russia

5 JSC "State Scientific Centre-Research Institute of Atomic Reactors", Dimitrovgrad, Russia
