TY - JOUR
T1 - Measurement and correlation solubility of sodium succinate in binary mixed solvents of water + (methanol or ethanol) mixtures
AU - Cao, Zheng
AU - Hu, Yonghong
AU - Li, Jiaojiao
AU - Liang, Mengmeng
AU - Liu, Yan
AU - Yang, Wenge
PY - 2014/5
Y1 - 2014/5
N2 - The solubility of sodium succinate in binary solvent mixtures was measured by an analytical stirred-flask method in the temperature range 278.15-318.15 K at atmospheric pressure. It was found that the solubility of sodium succinate in the system increased with increasing temperature and decreased with the increasing mass fractions of methanol or ethanol. The modified Apelblat equation, the Buchwski-Ksiazaczak λh equation and the combined nearly ideal binary solvent/Redlich-Kister (CNIBS/R-K) equation were proposed for correlating the experimental data. The modified Apelblat equation was found to regress the solubility data much better than the Buchwski-Ksiazaczak equation and the CNIBS/R-K equation in a binary solvent system. The dissolution enthalpy and dissolution entropy of sodium succinate were calculated from the solubility data, using the Van't Hoff equation. The experiment results and correlation models could be used as essential data in the purification of sodium succinate.
AB - The solubility of sodium succinate in binary solvent mixtures was measured by an analytical stirred-flask method in the temperature range 278.15-318.15 K at atmospheric pressure. It was found that the solubility of sodium succinate in the system increased with increasing temperature and decreased with the increasing mass fractions of methanol or ethanol. The modified Apelblat equation, the Buchwski-Ksiazaczak λh equation and the combined nearly ideal binary solvent/Redlich-Kister (CNIBS/R-K) equation were proposed for correlating the experimental data. The modified Apelblat equation was found to regress the solubility data much better than the Buchwski-Ksiazaczak equation and the CNIBS/R-K equation in a binary solvent system. The dissolution enthalpy and dissolution entropy of sodium succinate were calculated from the solubility data, using the Van't Hoff equation. The experiment results and correlation models could be used as essential data in the purification of sodium succinate.
KW - Modified Apelblat equation
KW - Sodium succinate
KW - Solubility
KW - Solution thermodynamics
UR - http://www.scopus.com/inward/record.url?scp=84901820374&partnerID=8YFLogxK
U2 - 10.1007/s10953-014-0168-1
DO - 10.1007/s10953-014-0168-1
M3 - 文章
AN - SCOPUS:84901820374
SN - 0095-9782
VL - 43
SP - 821
EP - 835
JO - Journal of Solution Chemistry
JF - Journal of Solution Chemistry
IS - 5
ER -