Towards understanding the correlation between UO_2~(2+) extraction and substitute groups in 2,9-diamide-1,10-phenanthroline

doi:10.1007/s11426-018-9227-1

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	Towards understanding the correlation between UO_2~(2+) extraction and substitute groups in 2,9-diamide-1,10-phenanthroline
	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
	2018
发表期刊	SCIENCE CHINA-CHEMISTRY (IF:4.132[JCR-2016],2.443[5-Year])
ISSN	1674-7291
EISSN	1869-1870
卷号	61 期号:10 页码:1285-1292
文章类型	Article
摘要	2,9-Diamide-1,10-phenanthroline (DAPhen) ligands represent a new family of tetradentate extractants given their strong affinity to actinides and the CHON principle. Among this family, N,N'-diethyl-N,N'-ditolyl-2,9-diamide-1,10-phenanthroline (Et-Tol-DAPhen), initially reported by us, exhibits excellent selectivity towards actinides (U, Th, Am, Pu) over lanthanides and thus can be potentially applied in the group actinide extraction (GANEX) process for the group separation of actinides. In this article, by tailoring the lengths of alkyl chains, we synthesized other four DAPhen ligands with different substitute groups in the diamide moieties, and characterized the relationship between properties and substitute groups of DAPhen ligand. The extraction results show that three of the ligands exhibit high performance in UO2 (2+) extraction from an acidic solution and the extracted UO2 (2+) can be easily stripped by only using ultrapure water. Spectrophotometry titration confirms that UO2 (2+) combined with all the four ligands in 1:1 mode. The extended X-ray absorption finestructure (EXAFS) study shows that six donor atoms comprise the first equatorial shell of the UO2 (2+) ions bonded by the DAPhen ligands, among which two nitrogen and two oxygen atoms are from the DAPhen ligand, while other two oxygen atoms are from one nitrate ions. This article promises to provide basic data for assessing the feasibility of this kind of DAPhen ligands applied in actinides separation from nuclear wastes.
关键词	2,9-diamide-1,10-phenanthroline UO22+ extraction UV-Vis titration EXAFS
DOI	10.1007/s11426-018-9227-1
关键词[WOS]	AM(III)/EU(III) SELECTIVITY ; THEORETICAL PREDICTION ; SOLVENT SYSTEM ; NUCLEAR-FUEL ; ACTINIDES ; URANYL ; SEPARATION ; COORDINATION ; URANIUM(VI) ; COMPLEXES
收录类别	SCI ; EI
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000446627600012
CSCD记录号	CSCD:6384261
EI入藏号	20184005898884
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/286385
专题	多学科研究中心
作者单位	中国科学院高能物理研究所
第一作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhang XR,Yuan LY,Chai ZF,et al. Towards understanding the correlation between UO_2~(2+) extraction and substitute groups in 2,9-diamide-1,10-phenanthroline[J]. SCIENCE CHINA-CHEMISTRY,2018,61(10):1285-1292.
APA	张昕蕊.,袁立永.,柴之芳.,石伟群.,Zhang, XR.,...&Shi, WQ.(2018).Towards understanding the correlation between UO_2~(2+) extraction and substitute groups in 2,9-diamide-1,10-phenanthroline.SCIENCE CHINA-CHEMISTRY,61(10),1285-1292.
MLA	张昕蕊,et al."Towards understanding the correlation between UO_2~(2+) extraction and substitute groups in 2,9-diamide-1,10-phenanthroline".SCIENCE CHINA-CHEMISTRY 61.10(2018):1285-1292.