| 二（2-乙基己基）二硫代磷酸溶剂萃取铊的热动力学 |
| |
| 引用本文： | 刘兴芝,房大维,康艳红,李俊,臧树良.二（2-乙基己基）二硫代磷酸溶剂萃取铊的热动力学[J].中国化学,2005,23(5):567-570. |
| |
| 作者姓名： | 刘兴芝 房大维 康艳红 李俊 臧树良 |
| |
| 作者单位： | 辽宁大学化学化工学院， 稀有离散元素研究所， 沈阳 110036 |
| |
| 摘 要： | 在Tl2SO4＋Na2SO4＋二（2-乙基己基）二硫代磷酸＋n-C8H18＋水体系中， 测定了0.1－2.0 mol•kg－1离子强度范围内Tl＋ 的平衡摩尔浓度。水相中电解质Na2SO4 控制溶液离子强度， 有机相中萃取剂取278.15 K至303.15 K范围内的恒定摩尔浓度。通过外推法和多项式近似得到了不同温度下的标准萃取常数K0，计算了萃取过程的热动力学量。
|
| 关 键 词： | 热力学 溶剂萃取法 铊 二（2-乙烷基己基）二硫代磷酸 化学反应 |
| 收稿时间： | 2004-3-1 |
| 修稿时间： | 2005-1-14 |
Thermodynamics of Solvent Extraction of Thallium(I) with Di(2‐ethylhexyl)dithiophosphoric Acid |
| |
| Liu Xing‐Zhi,Fang Da‐Wei,Kang Yan‐Hong,Li Jun,Zang Shu‐Liang.Thermodynamics of Solvent Extraction of Thallium(I) with Di(2‐ethylhexyl)dithiophosphoric Acid[J].Chinese Journal of Chemistry,2005,23(5):567-570. |
| |
| Authors: | Liu Xing‐Zhi Fang Da‐Wei Kang Yan‐Hong Li Jun Zang Shu‐Liang |
| |
| Abstract: | In Tl2SO2+Na2SO4+di(2‐ethylhexyl)dithiophosphoric acid+n‐C8H18+water system, the Tl+ equilibrium molalities were measured at ionic strength from 0.1 to 2.0 mol·kg‐1 containing Na2SO4 as supporting electrolyte in aqueous phase and at constant molality of extractant at temperatures from 278.15 to 303.15 K in organic phase. The standard extraction constants K0 at various temperatures were obtained by methods of extrapolation and polynomial approximation. Thermodynamic quantities for the extraction process were calculated. |
| |
| Keywords: | extraction thallium di(2‐ethylhexyl)dithiophosphoric acid |
|
| 点击此处可从《中国化学》浏览原始摘要信息 |
| 点击此处可从《中国化学》下载免费的PDF全文 |
