Journal
JOURNAL OF FLUORINE CHEMISTRY
Volume 218, Issue -, Pages 69-75Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jfluchem.2018.11.018
Keywords
Fluorides; Rare earth; Sodium nitrate; Flux; NaREF4; Inorganic synthesis
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Preparation of NaREF4 compounds (RE = La-Lu, Y) from rare earth nitrates dissolved in molten NaNO3 has been studied at 350 degrees C. Two-fold excess of sodium fluoride (NaF) was used as fluorinating agent. Hexagonal NaREF4 (RE = Pr-Lu, Y) phases isotypic with beta-NaYF 4 have been prepared. A mixture of CeF3 and NaCeF4 was obtained in cerium system, while only LaF3 phase was formed in lanthanum system.
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