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Inorganics 2018, 6(2), 38; https://doi.org/10.3390/inorganics6020038

The Melt of Sodium Nitrate as a Medium for the Synthesis of Fluorides

1
Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow 119991, Russia
2
Institute of Fine Chemical Technology, Moscow Technology University, 86 Vernadsky Prospect, Moscow 119571, Russia
3
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninskii Prospect, Moscow 119991, Russia
*
Author to whom correspondence should be addressed.
Received: 5 March 2018 / Revised: 23 March 2018 / Accepted: 28 March 2018 / Published: 29 March 2018
(This article belongs to the Special Issue Metal Fluorides)
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Abstract

The preparation of NaLnF4 complexes, LnF3 (Ln = La, Ce, Y) rare earth binary fluorides, CaF2 and SrF2 alkali earth fluorides, as well as mixtures of these compounds from their nitrates dissolved in molten NaNO3 has been studied in order to select the ideal solvent for fluoride synthesis by spontaneous crystallization from flux. Sodium fluoride (NaF) was used as a fluorinating agent. The results of our experiments have confirmed that NaNO3 melt is one of the most promising media for precipitating said inorganic fluoride materials within a broad temperature range (300–500 °С). Also, in contrast with precipitation/co-precipitation from aqueous solutions, our syntheses have resulted in obtaining equilibrium phases only. View Full-Text
Keywords: fluorides; sodium nitrates; flux; fluorite; inorganic synthesis fluorides; sodium nitrates; flux; fluorite; inorganic synthesis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Fedorov, P.; Mayakova, M.; Alexandrov, A.; Voronov, V.; Kuznetsov, S.; Baranchikov, A.; Ivanov, V. The Melt of Sodium Nitrate as a Medium for the Synthesis of Fluorides. Inorganics 2018, 6, 38.

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