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Synthesis of Calcium and Strontium Fluorides Using Li2SO4–Na2SO4 Eutectic Melts

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Abstract

Calcium fluoride and strontium fluoride powders were prepared from respective alkaline-earth metal sulfates by a chemical reaction carried out in molten salt flux made up of lithium and sodium sulfates at 700°С. The fluorinating agent used was sodium fluoride. The irregular shapes of powder particles are likely to arise from the topotaxic phenomena occurring on the precursor calcium sulfate and strontium sulfate particles.

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ACKNOWLEDGMENTS

Equipment of the Shared Facilities Centers of the Prokhorov General Physics Institute and the Kurnakov Institute of General and Inorganic Chemistry was used in the study. The authors appreciate the help of A.E. Baranchikov in SEM experiments.

Funding

This work was fulfilled in the frame of the R&D plan of the Prokhorov General Physics Institute and was partially supported by the Russian Foundation for Basic Research (project no. 2018-18-29-12050-MK).

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Authors and Affiliations

  1. Prokhorov General Physics Institute, of the Russian Academy of Sciences, 119991, Moscow, Russia

    V. Yu. Proydakova, A. A. Alexandrov, V. V. Voronov & P. P. Fedorov

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  1. V. Yu. Proydakova
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  2. A. A. Alexandrov
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  3. V. V. Voronov
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  4. P. P. Fedorov
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Corresponding author

Correspondence to P. P. Fedorov.

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Translated by O. Fedorova

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Proydakova, V.Y., Alexandrov, A.A., Voronov, V.V. et al. Synthesis of Calcium and Strontium Fluorides Using Li2SO4–Na2SO4 Eutectic Melts. Russ. J. Inorg. Chem. 65, 834–838 (2020). https://doi.org/10.1134/S0036023620060169

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