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In-situ anodic precipitation process for highly efficient separation of aluminum alloys

Author

Listed:
  • Yu-Ke Zhong

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Ya-Lan Liu

    (Chinese Academy of Sciences)

  • Kui Liu

    (Sun Yat-sen University)

  • Lin Wang

    (Chinese Academy of Sciences)

  • Lei Mei

    (Chinese Academy of Sciences)

  • John K. Gibson

    (Lawrence Berkeley National Laboratory (LBNL))

  • Jia-Zhuang Chen

    (Chinese Academy of Sciences)

  • Shi-Lin Jiang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yi-Chuan Liu

    (Chinese Academy of Sciences)

  • Li-Yong Yuan

    (Chinese Academy of Sciences)

  • Zhi-Fang Chai

    (Chinese Academy of Sciences)

  • Wei-Qun Shi

    (Chinese Academy of Sciences)

Abstract

Electrorefining process has been widely used to separate and purify metals, but it is limited by deposition potential of the metal itself. Here we report in-situ anodic precipitation (IAP), a modified electrorefining process, to purify aluminium from contaminants that are more reactive. During IAP, the target metals that are more cathodic than aluminium are oxidized at the anode and forced to precipitate out in a low oxidation state. This strategy is fundamentally based on different solubilities of target metal chlorides in the NaAlCl4 molten salt rather than deposition potential of metals. The results suggest that IAP is able to efficiently and simply separate components of aluminum alloys with fast kinetics and high recovery yields, and it is also a valuable synthetic approach for metal chlorides in low oxidation states.

Suggested Citation

  • Yu-Ke Zhong & Ya-Lan Liu & Kui Liu & Lin Wang & Lei Mei & John K. Gibson & Jia-Zhuang Chen & Shi-Lin Jiang & Yi-Chuan Liu & Li-Yong Yuan & Zhi-Fang Chai & Wei-Qun Shi, 2021. "In-situ anodic precipitation process for highly efficient separation of aluminum alloys," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26119-9
    DOI: 10.1038/s41467-021-26119-9
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