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Stability of Inorganic Fluorine‐Bearing Compounds: I, Binary Metallic Fluorides
Author(s) -
DEADMORE D. L.,
MACHIN J. S.,
ALLEN A. W.
Publication year - 1961
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1961.tb13722.x
Subject(s) - hydrolysis , fluorine , chemistry , metal , inorganic chemistry , nuclear chemistry , organic chemistry
Because of the practical importance in connection with the loss of fluorine from slags and enamels, the stabilities of NaF, KF, MgF 2 , CaF 2 , and ZnF 2 in dry and moist atmospheres at elevated temperatures were studied by following the loss in weight of 0.25‐ to 2.0‐gm. samples. The principal reaction was shown to be hydrolysis of the salts in moist atmospheres. The activation energies for the hydrolysis were calculated. NaF and KF were hydrolyzed little or not at all below 1000°C., MgF 2 was hydrolyzed readily in the range 1050° to 1150°C., CaF 2 was hydrolyzed slowly in the range 1200° to 1350°C., and ZnF 2 was completely hydrolyzed in the range 680° to 750°C.