Thermodynamic Properties of the β-Diketone-ZnSO4-(NH4)2SO4-NH3(aq)-H2O System

被引：0

作者：

Li, Qinxiang ^{[1
,2
,3
]}

Zhu, Mark ^{[1
,2
]}

Hu, Huiping ^{[3
]}

Ding, Zhiying ^{[3
]}

Yin, Zhoulan ^{[3
]}

机构：

[1] China Natl Rare Met Engn Res Ctr, Qingyuan 511517, Guangdong, Peoples R China

[2] Vital Mat Co Ltd, Vital Adv Mat Res & Dev Ctr, Qingyuan 511517, Guangdong, Peoples R China

[3] Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2016年 / 61卷 / 04期

关键词：

ZINC SILICATE HEMIMORPHITE; AMMONIACAL SOLUTIONS; BETA-DIKETONE; OSMOTIC COEFFICIENTS; EXTRACTION; COPPER; DISSOLUTION; ELECTROLYTES; SOLUBILITY; RECOVERY;

D O I：

10.1021/acs.jced.5b00969

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solubility of beta-diketone (4-ethyl-1-phenyl-1, 3-octadione, abbreviated as HA, C16H22O2, molecular weight, 246.34)-ZnSO4-(NH4)(2)SO4-NH3(aq)-H2O system at T = (298.15, 308.15) K is elaborately measured by isothermal method. The results show that the solubility of ZnA(2(o)), NH(4)A((o)), H2O(o), Zn-(w)(2+), NH4(w)+, WO4(w)2-, and HA((w)) increases with the increase of the concentration of zinc sulfate. In contrast, the solubility of HA((o)), H2O(w), and NH3(w) decreases with the increase of the concentration of zinc sulfate. The distribution ratio and extraction equilibrium isotherm of zinc in extraction system are obtained at T = (298.15, 308.15) K. The consequence indicates that extraction equilibrium isotherm is connected with temperature, and at the same condition, the distribution ratio of Zn(II) at 298.15 K is greater than 308.15 K. The activity coefficient of the components in mixture electrolyte solutions is calculated by Pitzer model, and the activity coefficient in organic phase is gained by correlating the extraction thermodynamic equilibrium constant with Gibbs-Duhem formula.

引用

页码：1585 / 1591

页数：7

共 30 条

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