Extraction behavior of strontium from nitric acid solution with N,N,N′,N′-Tetraisobutyl diglycolamide

被引：0
|
作者：
S.-D. Ding
T. Yang
N. Liu
L. Zhang
机构：
[1] Sichuan University,College of Chemistry
[2] Sichuan University,Key Laboratory of Radiation Physics and Technology of Education Ministry of China, Institute of Nuclear Science and Technology
来源：
Journal of the Iranian Chemical Society | 2010年 / 7卷
关键词：
-Tetraisobutyl diglycolamide; Strontium; Extraction; Diglycolamide; High level liquid waste;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The extraction behaviors of strontium from nitric acid solution were investigated with N,N,N′,N′-tetraisobutyl diglycolamide (TiBDGA). Effects of acidity, diluents, concentration of extractant and temperature on the distribution ratio of strontium (DSr) were examined. The stoichiometry of the extracted molecule was Sr2+:TiBDGA of 1:3. The apparent extraction equilibrium concentration constant logKex was 3.25. The enthalpy change ΔH and entropy change ΔS were −55.6 kJ mol-1 and −124 J mol-1 K-1, respectively. The extraction is an exothermic process. Through two strip stages, strontium could be stripped effectively by 0.01 M nitric acid solution.
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页码：545 / 553
页数：8
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