Citation: LIU Chao, ZHAO Long, WEI Yue-Zhou, HE Lin-Feng, TANG Fang-Dong. Solvent Extraction of Th⁴⁺ with TODGA in [C₂mim][NTf₂][J]. Chinese Journal of Inorganic Chemistry, ;2015, (1): 121-126. doi: 10.11862/CJIC.2015.009 shu

Solvent Extraction of Th⁴⁺ with TODGA in [C₂mim][NTf₂]

1.
1. Nuclear Chemical Engineering Laboratory, School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
2.
2. Division of Chemistry and Ionizing Radiation Measurement Technology, Shanghai Institute of Measurement and Testing Technology, Shanghai, 201203, China

Corresponding author: ZHAO Long,
Received Date: 4 August 2014
Available Online: 15 September 2014
Fund Project: 国家自然科学基金资助项目(11475112,91126006) (11475112,91126006)上海高校特聘教授(东方学者)岗位计划资助项目. (东方学者)

The extraction behavior of Th⁴⁺ from nitric acid solution with N,N,N',N'-tetraoctyldiglycolamide(TODGA) dissolved in hydrophobic ionic liquid [C₂mim][NTf₂] was studied. The effect of contact time, acidity, Th⁴⁺ concentration,TODGAconcentration and temperature on the extraction performance of TODGA/[C₂mim][NTf₂] system were investigated. For comparison, the same experiment in TODGA/isooctane system was also done. The results showed that the extraction of TODGA/[C₂mim][NTf₂] system against Th⁴⁺ was endothermic reaction and could balance within₅ min at 50 ℃. The extraction efficiency decreased first and then increased with the increasing of acidity and Th⁴⁺concentration as well as decreasing of TODGAconcentration. It was found that TODGA/[C₂mim][NTf₂] system had better extraction efficiency than TODGA/isooctane system especially at low acidity. The extraction mechanism was suggested that at low acidity the extraction proceed via ion exchange mechanism to a coordination compound,and the mechanism at the high acidity was neutral complex.
- Th⁴⁺;N,N,N',N'-tetraoctyldiglycolamide;ionic liquid;extraction
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通讯作者: 陈斌, bchen63@163.com

Solvent Extraction of Th⁴⁺ with TODGA in [C₂mim][NTf₂]