期刊
SOLID STATE SCIENCES
卷 14, 期 4, 页码 528-534出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solidstatesciences.2012.01.009
关键词
Mechanochemistry; High energy ball milling; Alkaline earth fluorides; NH4F
High energy ball milling as fast, direct and solvent free method allows an easy access to nanocrystalline alkaline earth metal fluorides MF2 (M: Mg, Ca, Sr, Ba). Comparable metal sources (acetates, carbonates, hydroxides, alkoxides) were used for the reaction with NH4F as fluorinating agent. Even very simple manual shaking experiments between NH4F and the corresponding hydroxides in the stoichiometric ratio (M:F = 1:2, M: Ca, Sr, Ba) give phase pure fluorides. Moreover, comparable classical thermal reactions in closed crucibles at higher temperatures provide phase pure crystalline fluorides in nearly all cases as well. (C) 2012 Elsevier Masson SAS. All rights reserved.
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