Skip to main content
SpringerLink
Log in

Physicochemcial analysis of the phase diagram of the ternary liquid system [Y(NO3)3(TBP)3]-tetradecane-[UO2(NO3)2(TBP)2]

  • Published:
Radiochemistry Aims and scope

Abstract

The phase diagram of the ternary liquid system (TLS) [Y(NO3)3(TBP)3]-tetradecane-[UO2 · (NO3)2(TBP)2] (TBP is tri-n-butyl phosphate) at 298.15 K is constructed. The TLS is characterized by an area of homogeneous solutions and an area of two-phase liquid systems with one of the phases (I) enriched in [Y(NO3)3(TBP)3] and [UO2(NO3)2(TBP)2] and the other phase (II), in tetradecane. The inter-molecular interaction parameters and excess Gibbs energies (g E) for the binary systems and TLS along the binodal curve were calculated from data on the mutual solubility in the binary system [Y(NO3)3(TBP)3]-tetradecane and the ternary liquid system, using equations of the NRTL theory. For the binary system [Y(NO3)3(TBP)3]-[UO2(NO3)2(TBP)2], g E < 0, and for the other binary systems, g E > 0. An algorithm is given for computer calculation of the binodal curve and nodes for the TLS within the framework of NRTL equations using the intermolecular interaction parameters.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Keskinov, V.A., Lishchuk, V.V., and Pyartman, A.K., Radiokhimiya, 2007, vol. 49, no. 5, pp. 417–419.

    Google Scholar 

  2. Renon, H. and Prausnitz, J.M., Am. Inst. Chem. Eng. J., 1968, vol. 14, pp. 135–144.

    CAS  Google Scholar 

  3. Walas, S.M., Phase Equilibria in Chemical Engineering, Boston: Butterworth, 1985.

    Google Scholar 

  4. Marina, J.M. and Tassias, D.P., Ind. Eng. Chem. Process Des. Develop., 1973, vol. 12, pp. 67–71.

    Article  CAS  Google Scholar 

  5. Dennis, J.E. and Schnabel, R.B., Numerical Methods for Unconstrained Optimization and Nonlinear Equations, New York: Prentice-Hall, 1983.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. St. Petersburg State Institute of Technology (Technical University), St. Petersburg, Russia

    V. A. Keskinov, A. K. Pyartman & N. A. Charykov

Authors
  1. V. A. Keskinov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. K. Pyartman
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. N. A. Charykov
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Original Russian Text © V.A. Keskinov, A.K. Pyartman, N.A. Charykov, 2008, published in Radiokhimiya, 2008, Vol. 50, No. 5, pp. 406–409.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Keskinov, V.A., Pyartman, A.K. & Charykov, N.A. Physicochemcial analysis of the phase diagram of the ternary liquid system [Y(NO3)3(TBP)3]-tetradecane-[UO2(NO3)2(TBP)2]. Radiochemistry 50, 470–473 (2008). https://doi.org/10.1134/S1066362208050068

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S1066362208050068

PACS numbers

Search

Navigation