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A new solvent system containing N,N '-diethyl-N,N '-ditolyl-2,9-diamide-1,10-phenanthroline in 1-(trifluoromethyl)-3-nitrobenzene for highly selective UO22+ extraction
Zhang XR(张昕蕊); Yuan LY(袁立永); Chai ZF(柴之芳); Shi WQ(石伟群); Zhang, XR; Yuan, LY; Chai, ZF; Shi, WQ
2016
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
Volume168Pages:232
Corresponding Author袁立永
SubtypeArticle
AbstractA novel tetradentate ligand combining hard O-donor and soft N-donors in the same molecule, N,N'-diethyl-N,N'-ditolyl-2,9-diamide-1,10-phenanthroline (Et-Tol-DAPhen), was developed in our laboratory aiming at the group separation of actinides from lanthanides. Herein, the solvent extraction of UO22+ by Et-Tol-DAPhen in 1-(trifluoromethyl)-3-nitrobenzene diluent was investigated in detail. The effects of contact time, Et-Tol-DAPhen concentration, acidity, and competing ions on the extraction were discussed, the extracted UO22+ speciation was analysed, and the stripping of UO22+ from organic phase was performed. The results clearly show that Et-Tol-DAPhen/1-(trifluoromethyl)-3-nitrobenzene provides a highly efficient extraction of UO22+ from HNO3 media with a fast extraction kinetics of less than 5 min and a large distribution ratio of more than 300. Moreover, the system shows excellent selectivity toward UO22+ over Ln(3+) in a wide acidity range. Stripping experiments indicate that almost a complete back extraction of tie could be achieved via only one stage operation using 5% Na2CO3 solution. Findings of the present work provide new data for assessing the feasibility of Et-Tol-DAPhen, as well as other new ligand with hard-soft donors combined in the same molecule, applied in the group separation of actinides over lanthanides. (C) 2016 Elsevier B.V. All rights reserved.
KeywordN,N '-diethyl-N,N '-ditolyl-2,9-diamide-1,10-phenanthroline Uranyl Extraction GANEX process
DOI10.1016/j.seppur.2016.05.056
WOS KeywordNITRIC-ACID SOLUTION ; ACTINIDE EXTRACTION ; SEPARATION ; URANIUM(VI) ; STABILITY ; LIGAND ; THORIUM(IV) ; URANYL
Language英语
WOS IDWOS:000378951800028
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/261060
Collection院士
多学科研究中心
Affiliation中国科学院高能物理研究所
Recommended Citation
GB/T 7714
Zhang XR,Yuan LY,Chai ZF,et al. A new solvent system containing N,N '-diethyl-N,N '-ditolyl-2,9-diamide-1,10-phenanthroline in 1-(trifluoromethyl)-3-nitrobenzene for highly selective UO22+ extraction[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2016,168:232.
APA 张昕蕊.,袁立永.,柴之芳.,石伟群.,Zhang, XR.,...&Shi, WQ.(2016).A new solvent system containing N,N '-diethyl-N,N '-ditolyl-2,9-diamide-1,10-phenanthroline in 1-(trifluoromethyl)-3-nitrobenzene for highly selective UO22+ extraction.SEPARATION AND PURIFICATION TECHNOLOGY,168,232.
MLA 张昕蕊,et al."A new solvent system containing N,N '-diethyl-N,N '-ditolyl-2,9-diamide-1,10-phenanthroline in 1-(trifluoromethyl)-3-nitrobenzene for highly selective UO22+ extraction".SEPARATION AND PURIFICATION TECHNOLOGY 168(2016):232.
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