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Статья
2022

Bulk Properties of Di(2-ethylhexyl)phosphoric Acid–Samarium (Europium, Gadolinium) Di(2-ethylhexyl)phosphate–Organic Solvent Solutions


I. I. BabayanI. I. Babayan, S. V. KurdakovaS. V. Kurdakova, N. A. KovalenkoN. A. Kovalenko, I. A. UspenskayaI. A. Uspenskaya
Российский журнал физической химии А
https://doi.org/10.1134/S0036024422010046
Abstract / Full Text

Complexes formed by di(2-ethylhexyl)phosphoric acid (D2EHPA) and lanthanides (Sm, Eu, Gd) are synthesized and characterized. The densities of D2EHPA–samarium (europium, gadolinium) di(2-ethylhexyl)phosphate–n-heptane (toluene, cyclohexane, n-hexane) solutions that form the organic phase in the processes of extraction of rare-earth elements (REE) are measured. It is shown that the Redlich–Kister model allows the bulk properties of the D2EHPA–REE di(2-ethylhexyl)phosphate–organic solvent systems to be described using data for D2EHPA–organic solvent binary subsystems and the density of liquid REE di(2-ethylhexyl)phosphate.

Author information
  • Department of Chemistry, Moscow State University, 199991, Moscow, RussiaI. I. Babayan, S. V. Kurdakova, N. A. Kovalenko & I. A. Uspenskaya
References
  1. F. Xie, T. A. Zhang, and D. Dreisinger, Miner. Eng., 56, 10 (2014).
  2. T. Harada, M. Smutz, and R. Bautista, J. Chem. Eng. Data 17, 203 (1972).
  3. W. Srirachat, T. Wannachod, U. Pancharoen, et al., Fluid Phase Equilib. 434, 117 (2017).
  4. L. R. Koekemoer, M. J. G. Badenhorst, and R. C. Everson, J. Chem. Eng. Data 50, 587 (2005).
  5. N. Swain, S. K. Singh, D. Panda, et al., J. Mol. Liq. 94, 233 (2001).
  6. B. Dalai, S. K. Dash, S. K. Singh, et al., J. Chem. Thermodyn. 93, 143 (2016).
  7. B. Dalai, S. K. Dash, S. K. Singh, et al., Biointerface Res. Appl. Chem. 10, 5323 (2020).
  8. S. Kurdakova, N. Kovalenko, and I. Uspenskaya, Mosc. Univ. Chem. Bull. 71, 147 (2016).
  9. A. Rout, S. Mishra, and N. Ramanathan, J. Mol. Liq. 313, 113498 (2020).
  10. S. Kurdakova, T. V. Zapolskih, N. A. Kovalenko, et al., J. Chem. Eng. Data 63, 3839 (2018).
  11. Yu. I. Trifonov, E. K. Legin, and D. N. Suglobov, Radiokhimiya 4, 422 (1985).
  12. M. Milanova and D. Todorovsky, Termochim. Acta 243, 27 (1994).
  13. Yu. Trifonov, E. Legin, and D. Suglobov, Radiokhimiya 6, 750 (1987).
  14. V. Spiryakov, Radiokhimiya 14, 574 (1972).
  15. L. Bozukov, M. Milanova, and D. Todorovsky, Cryst. Res. Technol. 30, 985 (1995).
  16. Y. Tasaki-Handa, J. Colloid Interface Sci. 413, 65 (2014).
  17. D. Yu. Grigorash, S. V. Kurdakova, N. A. Kovalenko, et al., J. Chem. Thermodyn. 163, 106608 (2021).