Synthesis and structure of triple thorium phosphates with monazite structure

Abstract

Three monazites MIILaTh(PO4)3 (MII = Ca, Sr, Cd) have been studied both computationally and experimentally to determine the influence of the MII cation nature on monazite crystal structure and characteristics important for their use as matrix forms for immobilizing radioactive waste. Their crystal structures have been refined by the Rietveld method. Functional composition has been confirmed by IR spectroscopy. Thermal stability has been tested by DTA-TG.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

References

  1. 1.

    Lutze W, Ewing RS (eds) (1988) Radioactive waste forms for the future. North-Holland, Amsterdam, p 495

    Google Scholar 

  2. 2.

    Povarennykh SA (1966) Crystal chemical studies of minerals. Naukova Dumka, Kiev, p 416 (in Russian)

    Google Scholar 

  3. 3.

    Volkov YuF (1999) Radiokhimiya 41(2):161

    Google Scholar 

  4. 4.

    Orlova AI, Kitaev DB, Kemenov DB (2003) Radiokhimiya 45(2):97

    Google Scholar 

  5. 5.

    Lucuta PG, Verrall RA, Matzke H, Palmer BJ (1991) Microstructural features of SIMFUEL—simulated high-burnup UO2-based nuclear fuel. J Nucl Mater 178(1):48–60

    CAS  Article  Google Scholar 

  6. 5.

    Sazonov AA (2011) Sintez, stroyeniye i fiziko-khimicheskiye svoystva dvoynykh nitratov, fosfatov i vanadatov toriya [Synthesis, structure and physicochemical properties of thorium double nitrates, phosphates and vanadates]

  7. 6.

    Macrae CF, Edgington PR, McCabe P, Pidock E, Shields GP, Taylor R, Towler M, van de Streek J (2006) Mercury: visualization and analysis of crystal structures. J Appl Cryst 39:20 453–457.

    Article  Google Scholar 

  8. 7.

    Uvarov V (2019) The influence of X-ray diffraction pattern angular range on Rietveld refinement results used for quantitative analysis, crystallite size calculation and unit-cell parameter refinement. J Appl Cryst 52:252–261

    CAS  Article  Google Scholar 

  9. 8.

    Uvarov V (2019) Supporting Information for article: the influence of X-ray diffraction pattern angular range on rietveld refinement results used for quantitative analysis, crystallite size calculation and unit-cell parameter refinement. J Appl Cryst 52:252–261

    CAS  Article  Google Scholar 

  10. 9.

    Bruker (2006) TOPAS V3.0 user’s manual. Bruker AXS, Karlsruhe

    Google Scholar 

  11. 10.

    Hellenbrandt M (2004) The inorganic crystal structure database (ICSD)—present and future. Crystallogr Rev 10:17–22

    CAS  Article  Google Scholar 

  12. 12.

    Adelstein N, Mun BS, Ray HL, Ross PN Jr, Neaton JB, Jounghe LC (2011) Structure and electronic properties of cerium orthophosphate: theory and experiment. Phys Rev B 83:205104

    Article  Google Scholar 

Download references

Funding

We acknowledge the Ministry of Science and Higher Education agreement No. 075-15-2020-808.

Author information

Affiliations

Authors

Corresponding author

Correspondence to Alexander Knyazev.

Additional information

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Knyazev, A., Savushkin, I., Mirsaidov, U. et al. Synthesis and structure of triple thorium phosphates with monazite structure. J Radioanal Nucl Chem 327, 1105–1112 (2021). https://doi.org/10.1007/s10967-020-07586-8

Download citation

Keywords

  • Monazite
  • Thorium phosphate, MIILaTh(PO4)3
  • Crystal structure
  • Rietveld method
  • IR spectroscopy