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

doi:10.1016/j.seppur.2016.05.056

	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
	Chai ZF(柴之芳); Yuan LY(袁立永); Zhang XR(张昕蕊); Zhang, XR; Shi, WQ; Chai, ZF; Yuan, LY; Shi WQ(石伟群)
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2016
卷号	168 页码:232
关键词	N,N '-diethyl-N,N '-ditolyl-2,9-diamide-1,10-phenanthroline Uranyl Extraction GANEX process
DOI	10.1016/j.seppur.2016.05.056
通讯作者	袁立永
英文摘要	A 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.
语种	英语
WOS记录号	WOS:000378951800028
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/261060]
专题	高能物理研究所_院士高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Chai ZF,Yuan LY,Zhang XR,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	柴之芳.,袁立永.,张昕蕊.,Zhang, XR.,Shi, WQ.,...&石伟群.(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	柴之芳,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.