The Melt of Sodium Nitrate as a Medium for the Synthesis of Fluorides
by
Pavel Fedorov 1,2,*
, Mariya Mayakova 1, Alexander Alexandrov 2, Valery Voronov 1, Sergey Kuznetsov 1, Alexander Baranchikov 3 and .jpg)
Vladimir Ivanov 3
Pavel Fedorov 1,2,*, Mariya Mayakova 1, Alexander Alexandrov 2, Valery Voronov 1, Sergey Kuznetsov 1, Alexander Baranchikov 3 and Vladimir Ivanov 3
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.
Inorganics 2018, 6(2), 38; https://doi.org/10.3390/inorganics6020038
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)
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.
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Keywords:
fluorides; sodium nitrates; flux; fluorite; inorganic synthesis
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MDPI and ACS Style
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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