Activity Coefficients of CsCl in 1,2-Propanediol + Water or 1,3-Propanediol + Water Mixed Solvents at 298.15 K
Activity Coefficients of CsCl in 1,2-Propanediol + Water or 1,3-Propanediol + Water Mixed Solvents at 298.15 K
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DOI：
10.1021/je2000342
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发表时间：
2011-04
影响因子：
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通讯作者：
Shuai Feng;Jing Tang;Shu’ni Li;Q. Zhai;Yucheng Jiang;Mancheng Hu
中科院分区：
文献类型：
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作者：
Shuai Feng;Jing Tang;Shu’ni Li;Q. Zhai;Yucheng Jiang;Mancheng Hu
用电位法测定了298.15 K下氯化铯+丙二醇+水体系的平均活度系数。氯化铯的摩尔分数(M)为(0.0 1~1.2 0)m ol·kg−1，丙二醇(W)在混合溶剂中的质量分数为0.10~0.4 0。用匹策方程、修正的匹策方程和扩展的德拜−休克尔方程描述了电解液的非理想行为。用Pitzer方程计算了氯化铯的活度系数和渗透系数。我们还得到了氯化铯从水到丙二醇+水混合物的吉布斯转移能。
The mean activity coefficients of the CsCl + propylene glycol + water system were determined at 298.15 K using potentiometric measurements. The range of CsCl molality (m) is (0.01 to 1.20) mol·kg−1, and the mass fraction of propylene glycol (w) in mixed solvent is 0.10 to 0.40. The Pitzer, the modified Pitzer, and the extended Debye−Huckel equations are used to describe the nonideal behavior of the electrolyte. The activity coefficients and the osmotic coefficients of CsCl were calculated by the Pitzer equation. We also obtained the Gibbs energy of transfer of CsCl from water to propylene glycol + water mixtures.