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Synthesis and characterization of bis-succinamides for extraction of UO2 2+ from nitric acid solution

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Abstract

Several novel extractants based on the bis-succinamide (BisSCA) structure have been synthesized and characterized by NMR, IR and HRMS. Extraction distribution ratios of U(VI) have been studied as a function of popular diluents and aqueous concentrations of HNO3 as well as extractant concentration. In contrast with single succinamide extractants, the BisSCA extractants exhibited better extraction efficiency in the present system, and suggesting that BisSCAs could efficiently associate with uranyl ion in different mode of complexation. Based on the relationships between logD U(VI) and log[BisSCA] under different ionic strengths, the preferable compositions of extracted species were presumed to be the major [UO2(NO3)2]2·[BisSCA]2 and the minor UO2(NO3)2·[BisSCA]2.

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Acknowledgments

The authors thank National Natural Science Foundation of China (21471072, J1210001) and the National Key Scientific Instrument and Equipment Development Project of China (21327801), and Natural Science Foundation of Gansu Province, China (1308RJZA145) for the financial support of this work.

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Authors and Affiliations

  1. Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, People’s Republic of China

    Ze-Yi Yan, Ming-Jian He, Qing-Gang Huang, Peng Ren, Yang Li, Zuo-Miao Wu & Wang-Suo Wu

  2. Key Laboratory of Special Function Materials and Structure Design Ministry of Education, Lanzhou University, 730000, Lanzhou, People’s Republic of China

    Ze-Yi Yan & Wang-Suo Wu

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  1. Ze-Yi Yan
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  2. Ming-Jian He
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Correspondence to Ze-Yi Yan.

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Yan, ZY., He, MJ., Huang, QG. et al. Synthesis and characterization of bis-succinamides for extraction of UO2 2+ from nitric acid solution. J Radioanal Nucl Chem 310, 1101–1106 (2016). https://doi.org/10.1007/s10967-016-4863-9

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