TY - JOUR
T1 - Dissolution kinetics and solubility limit of CaF2 in molten KCl-NaCl salt
AU - Salhov, Shai
AU - Aizenshtein, Michael
AU - Froumin, Natalie
AU - Barzilai, Shmuel
AU - Frage, Nahum
PY - 2013/4/1
Y1 - 2013/4/1
N2 - The interaction between NaCl-KCl salt of an equimolar composition and CaF2 was investigated in the 1023-1123 K temperature range. The solubility limit was determined as 2.1, 2.5, and 3.4 mol.% for 1023, 1073, and 1123 K, respectively. The linear dependence of the specific weight loss with time and the activation energy of the dissolution (124.6 ± 8.7 kJ/mol) indicate that CaF2 dissociation of the ions is the limiting stage of the process. Thermodynamic properties (partial enthalpy and entropy) of CaF 2 in a dilute ternary -NaCl-KCl-CaF2 liquid solution were estimated using the values of the solubility limit and by applying a regular solution approach.
AB - The interaction between NaCl-KCl salt of an equimolar composition and CaF2 was investigated in the 1023-1123 K temperature range. The solubility limit was determined as 2.1, 2.5, and 3.4 mol.% for 1023, 1073, and 1123 K, respectively. The linear dependence of the specific weight loss with time and the activation energy of the dissolution (124.6 ± 8.7 kJ/mol) indicate that CaF2 dissociation of the ions is the limiting stage of the process. Thermodynamic properties (partial enthalpy and entropy) of CaF 2 in a dilute ternary -NaCl-KCl-CaF2 liquid solution were estimated using the values of the solubility limit and by applying a regular solution approach.
UR - http://www.scopus.com/inward/record.url?scp=84874714255&partnerID=8YFLogxK
U2 - 10.1007/s10853-012-7095-6
DO - 10.1007/s10853-012-7095-6
M3 - Article
AN - SCOPUS:84874714255
VL - 48
SP - 3173
EP - 3176
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 8
ER -