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3,3′-Bis(diisopropoxyphosphoryl)-1,1′-(heptane-1,7-diyl)diurea as a Very Efficient Extraction Agent for Europium and Americium

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Abstract

Solvent extraction of microamounts of Eu3+ and Am3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate and 3,3′-bis(diisopropoxyphosphoryl)-1,1′-(heptane-1,7-diyl)diurea (L) was studied. The equilibrium data were explained by assuming that the species HL+, \( {\text{ML}}_{2}^{3 + } \), and \( {\text{ML}}_{3}^{3 + } \) {M3+ = Eu3+, Am3+; L = 3,3′-bis(diisopropoxyphosphoryl)-1,1′-(heptane-1,7-diyl)diurea} are extracted into the organic phase. Extraction and stability constants of the cationic complex species in nitrobenzene saturated with water were determined and discussed. From the experimental results it is apparent that this very effective receptor for the Eu3+ and Am3+ cations could be considered as a potential extraction agent for nuclear waste treatment.

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Acknowledgements

This work was supported by the Grant Agency of Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Project No.: 42900/1312/3114 entitled “Environmental Aspects of Sustainable Development of Society,” and by the Czech Ministry of Education, Youth, and Sports, Project MSMT No.: 20/2015.

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Authors and Affiliations

  1. Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Kamýcká 129, 165 21, Prague 6 - Suchdol, Czech Republic

    Emanuel Makrlík

  2. Department of Analytical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague 6, Czech Republic

    Petr Vaňura

  3. Nuclear Research Institute, 250 68, Řež, Czech Republic

    Pavel Selucký

  4. JSC NIIneftepromchim, N. Erschova st., 29, Kazan, Russia, 420061

    Vasiliy Brusko

Authors
  1. Emanuel Makrlík
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  2. Petr Vaňura
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  3. Pavel Selucký
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  4. Vasiliy Brusko
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Correspondence to Emanuel Makrlík.

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Makrlík, E., Vaňura, P., Selucký, P. et al. 3,3′-Bis(diisopropoxyphosphoryl)-1,1′-(heptane-1,7-diyl)diurea as a Very Efficient Extraction Agent for Europium and Americium. J Solution Chem 47, 715–726 (2018). https://doi.org/10.1007/s10953-018-0748-6

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