TY - JOUR
T1 - Effect of cation species on solubilities of metal chlorides in water vapor at high temperatures and pressures
AU - Shimoyama, Yusuke
AU - Higashi, Hidenori
AU - Tsuzaki, Seiya
AU - Okazaki, Fumio
AU - Kitani, Yoshiaki
AU - Iwai, Yoshio
AU - Arai, Yasuhiko
N1 - Funding Information:
We gratefully acknowledge the financial support provided by Grant-in-Aid for Young Scientists (B) (16760608), The Ministry of Education, Culture, Sports, Science and Technology.
PY - 2009/8
Y1 - 2009/8
N2 - A flow type apparatus was used for the measurements of the solubilities of lithium chloride and calcium chloride in water vapor from 623 to 673 K and from 6.0 to 14.0 MPa. The solubilities of both metal chlorides increase with temperatures at the constant pressure. This behavior implies that the systems form the vapor-liquid equilibria at the conditions focused in this work unlike the case of sodium chloride and potassium chloride reported previously. A correlation model was developed for the solubilities of the metal chlorides in water vapor. The ionizations and hydrations of the metal chlorides were considered in the correlation model. The solubility data for the sodium chloride, potassium chloride, lithium chloride and calcium chloride in water vapor were correlated. The correlated results are in good agreement with the experimental data. The hydration numbers of metal chlorides were obtained from the correlations. It was found that the hydration numbers for the metal chlorides with monovalent cations increase with the radii of cations. For calcium chloride, the value of the hydration number is larger than those for metal chlorides with monovalent cations.
AB - A flow type apparatus was used for the measurements of the solubilities of lithium chloride and calcium chloride in water vapor from 623 to 673 K and from 6.0 to 14.0 MPa. The solubilities of both metal chlorides increase with temperatures at the constant pressure. This behavior implies that the systems form the vapor-liquid equilibria at the conditions focused in this work unlike the case of sodium chloride and potassium chloride reported previously. A correlation model was developed for the solubilities of the metal chlorides in water vapor. The ionizations and hydrations of the metal chlorides were considered in the correlation model. The solubility data for the sodium chloride, potassium chloride, lithium chloride and calcium chloride in water vapor were correlated. The correlated results are in good agreement with the experimental data. The hydration numbers of metal chlorides were obtained from the correlations. It was found that the hydration numbers for the metal chlorides with monovalent cations increase with the radii of cations. For calcium chloride, the value of the hydration number is larger than those for metal chlorides with monovalent cations.
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U2 - 10.1016/j.supflu.2009.04.007
DO - 10.1016/j.supflu.2009.04.007
M3 - Article
AN - SCOPUS:67349237007
SN - 0896-8446
VL - 50
SP - 1
EP - 5
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
IS - 1
ER -