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Solvent extraction of U(VI) by N,N-dimethyl-N′,N′-dioctylsuccinylamide and N,N-dimethyl-N′,N′-didecylsuccinylamide in cyclohexane

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Abstract

The extraction of uranyl nitrate by novel extractants of N,N-dimethyl-N′,N′-dioctylsuccinylamide (DMDOSA) and N,N-dimethyl-N′,N′-didecylsuccinylamide (DMDDSA) from aqueous nitric/nitrate solutions was investigated. It was found both the concentration of HNO3 and extractants had an effect on the U(VI) extraction distribution. The extraction mechanism was established, and stoichiometry of the main extracted species was confirmed to be UO2(NO3)2·2DMDOSA and UO2(NO3)2·2DMDDSA, respectively. Both of the extraction reactions are exothermic. FTIR spectral study of the U(VI) extracted species was also made.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China

    Yu Cui, Xiao-Feng Yang, Cheng Yang, Ye-Xin Li, Guo-Zhu Chen & Guo-Xin Sun

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  1. Yu Cui
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  2. Xiao-Feng Yang
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  3. Cheng Yang
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  4. Ye-Xin Li
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  6. Guo-Xin Sun
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Correspondence to Guo-Xin Sun.

Additional information

This work was supported by the National Natural Science Foundation of China (Nos. 21077044 and 21171069).

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Cui, Y., Yang, XF., Yang, C. et al. Solvent extraction of U(VI) by N,N-dimethyl-N′,N′-dioctylsuccinylamide and N,N-dimethyl-N′,N′-didecylsuccinylamide in cyclohexane. NUCL SCI TECH 27, 59 (2016). https://doi.org/10.1007/s41365-016-0056-z

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  • DOI: https://doi.org/10.1007/s41365-016-0056-z

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