Title: The High-temperature Heat Capacity of the (Li,Na)F Liquid Solution
Authors: BENES OndrejKONINGS RudyKÜNZEL CarstenSIERIG MarkDOCKENDORF AlexandreVLAHOVIC Luka
Citation: JOURNAL OF CHEMICAL THERMODYNAMICS vol. 41 p. 899-903
Publisher: ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
Publication Year: 2009
JRC N°: JRC52466
ISSN: 0021-9614
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC52466
DOI: 10.1016/j.jct.2009.02.009
Type: Articles in Journals
Abstract: The enthalpy increments of four liquid solutions Li0:8Na0:2F; Li0:6Na0:4F, Li0:4Na0:6F, and Li0:2Na0:8F were measured in the temperature range (1230 to 1470) K by drop calorimetry. The liquid phases of the LiF and NaF end-members were also measured, in the temperature range (1230 to 1470) K and (1320 to 1540) K, respectively. From the obtained results the molar heat capacity was derived and the data for pure LiF and NaF were correlated with the literature. In order to overcome problems related with the corrosive nature of alkali metal fluoride vapours at high temperature, a novel encapsulation technique is presented in this study. Small nickel crucibles were developed for this purpose which are sealed by laser welding.
JRC Institute:Institute for Transuranium Elements

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