Federal State Unitary Enterprise «All-Russian Research Institute Of Chemical Technology» (FSUE «ARRICT»)

V. V. Yakshin, Head of Experimintation and Analytic Center, phone: +7 (499) 324-85-60

Rare earth elements (REM) may be extracting by macrocyclic endoreceptors tipe of functionalized crown ethers from aqueons solution salts or mineral acids. By X-ray analisis investigated extracting complexes Tm(NO₃)₃ and Ce(NO₃)₄ with crown ether cis-syn-cis dicyclohexano-18-crown-6. The formation of similar supramolecular complexes of REM explain the specific properties of functionalized crown ethers in extraction and separation processes. The influence of crown ethers structure, role of laterial substitutes and condition of discovery and separation supramolecular processes was examined on coefficient distribution value. The peculiarities and perspectives of macrocyclic endoreceptors applilution was determinated for separation REM and their recovery from impurities.

1. Tananaev I. V. Redkozemelnye elementy i ittriy (Rare earth elements and yttrium). Moscow : Nauka, 1966. 380 p.

2. Gupta B., Malik P., Deep A. Solvent Extraction and Separation of Tetvalent Lanthanides and Yttrium Using Cyanex 923. Solv. Extr. Ion Echan. 2003. Vol. 21, No. 2. pp. 239–259.

3. Len Zh. -M. Supramolekulyarnaya khimiya. Kontseptsii i perspektivy (Supramolecular chemistry. Concepts and prospects). Novosibirsk : Nauka, Siberian branch of RAS, 1998. 339 p.

4. Stud J. V., Etvud J. L. Supramolekulyarnaya khimiya (Supramolecular chemistry). Moscow : Akademkniga, 2007. 895 p.

5. The Cambridge Structural Database. Cambridge (UK), 2000.

6. Bunzli J. -C. G., Pilloid F. Macrocyclic Effect in Lanthanoid Complexes with 12-, 15-, 18- and 21-Membered Crown Ethers. Inorg. Chem. 1989. Vol. 28, No. 13. pp. 2638–2642.

7. Yakshin V. V., Fedorova A. G., Valkov A. V. et al. Doklady AN SSSR – Reports of USSR Academy of Sciences. 1984. Vol. 277, No. 6. pp. 1417–1421.

8. Krasnova N. F., Simonov Yu. A., Belskiy V. K. et al. Kristallografiya – Crystallography Reports. 1986. Vol. 31, No. 6. pp. 1099–1104.

9. Dvorkin A. A., Krasnova N. F., Simonov Yu. A. et al. Kristallografiya – Crystallography Reports. 1984. Vol. 29, No. 3. pp. 471–475.

10. Yakshin V. V., Abashkin V. M., Laskorin B. N. Doklady AN SSSR – Reports of USSR Academy of Sciences. 1979. Vol. 244, No. 1. pp. 157–160.

11. Laskorin B. N., Yakshin V. V. Zhurnal Vsesoyuznogo Khimicheskogo Obshchestva im. D. I. Mendeleeva – Journal of All-union Chemical Society named by D. I. Mendeleev. 1985. Vol. 30, No. 5. pp. 579.

12. Nash K. L. Review of the basic chemistry and recent developments in trivalent f-elements. Solv. Extr. Ion Exch. 1993. Vol. 11, No. 4. pp. 729–825.

13. Samy T. M., Imura H., Suzuki N. Synergistic extraction of trivalent actinides and lanthanides using macrocyclic compounds. J. Radioanal. Nucl. Chem. Letters. 1988. Vol. 126. pp. 153–158.

14. Imura H., Saito Y., Ohashi K. et al. Characterisation of the lanthanum (III) and europium (III) trichloroacetate complexes extracted with 18-crown-6. Solv. Extr. Ion Exch. 1996. Vol. 14, No. 5. pp. 817–825.

15. Demin S. V., Zhilov V. I., Yakshin V. V. et al. Zhurnal neorganicheskoy khimii – Russian Journal of Inorganic Chemistry. 2006. Vol. 51. No. 10. pp. 1782–1785.

16. Yakshin V. V., Zhilov V. I., Demin S. V. et al. Extraction of Am and rare-earth elements from acidic solutions by alkyl derivatives of dibenzo- and dicyclohexano-18-crown-6. Compts Rendus Chimie. 2007. Vol. 10. pp. 1020–1025.

17. Yakshin V. V., Vilkova O. M., Tsarenko N. A. et al. Ekstraktsiya redkozemelnykh elementov iz azotnokislykh rastvorov alkilnymi proizvodnymi dibenzo- i ditsiklogeksil-18-kraun-6. II Mezhdunarodnyy simpozium «Razdelenie i kontsentrirovanie v analiticheskoy khimii i radiokhimii» (Extraction of the rare earth elements from the nitric acid solutions by the alkyl derivatives of the dibenzo- and dicyclohexyl-18-crown-6. II International Symposium «Separation and concentration in the analytical chemistry and radiochemistry»). Krasnodar, 2005. pp. 293.

18. Demin S. V., Zhilov V. I., Tsivadze A. Yu. et al. Zhurnal neorganicheskoy khimii – Russian Journal of Inorganic Chemistry. 2009. Vol. 54, No. 3. pp. 432–495.

19. Yakshin V. V., Tananaev I. G., Tsivadze A. Yu. et al. Extraction separation of actinide and rare earth elements by crownethers. International symposium by modern radiochemistry «Radiochemistry: achievements and prospects». Moscow, 2007. Vol. 5. pp. 253.

20. Zhilov V. I., Demin S. V., Tsivadze A. Yu. et al. Radiokhimiya – Radiochemistry. 2008. Vol. 50, No. 3. pp. 225–228.

21. Yakshin V. V., Pribylova G. A., Atamas L. I. et al. Selektivnoe svyazyvanie ionov urana, transuranovykh elementov i redkozemelnykh elementov funktsionalizirovannymi kraun-efirami. Pyataya Rossiyskaya konferentsiya po radiokhimii «Radiokhimiya-2006» (Selective fixation of the uranium ions, transuranic elements and rare earth elements by the functionalized crown ethers. Fifth Russian Conference on radiochemistry «Radiochemistry-2006»). Dubna, 2006. pp. 99.

22. Yakshin V. V., Vilkova O. M., Tsarenko N. A. et al. Doklady AN SSSR – Reports of USSR Academy of Sciences. 2007. Vol. 416, No. 5. pp. 630–634.