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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
Source PublicationSCIENCE CHINA-CHEMISTRY
ISSN1674-7291
EISSN1869-1870
Volume61Issue:10Pages:1285-1292
SubtypeArticle
Abstract2,9-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.
Keyword2,9-diamide-1,10-phenanthroline UO22+ extraction UV-Vis titration EXAFS
DOI10.1007/s11426-018-9227-1
WOS KeywordAM(III)/EU(III) SELECTIVITY ; THEORETICAL PREDICTION ; SOLVENT SYSTEM ; NUCLEAR-FUEL ; ACTINIDES ; URANYL ; SEPARATION ; COORDINATION ; URANIUM(VI) ; COMPLEXES
Indexed BySCI ; EI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000446627600012
CSCD IDCSCD:6384261
EI Accession Number20184005898884
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/286385
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
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.
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