Nuclear Engineering and Technology

  • 제53권8호
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  • Pages.2570-2575
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  • 2021
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Hydrogen isotope exchange behavior of protonated lithium metal compounds

  • Park, Chan Woo (Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Sung-Wook (Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute) ;
  • Sihn, Youngho (Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute) ;
  • Yang, Hee-Man (Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Ilgook (Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute) ;
  • Lee, Kwang Se (Kyungnam College of Information & Technology, Department of Advanced Materials & Chemical Engineering) ;
  • Roh, Changhyun (Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute) ;
  • Yoon, In-Ho (Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute)
  • 투고 : 2020.10.06
  • 심사 : 2021.02.15
  • 발행 : 2021.08.25
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초록

The exchange behaviors of hydrogen isotopes between protonated lithium metal compounds and deuterated water or tritiated water were investigated. The various protonated lithium metal compounds were prepared by acid treatment of lithium metal compounds with different crystal structures and metal compositions. The protonated lithium metal compounds could more effectively reduce the deuterium concentration in water compared with the corresponding pristine lithium metal compounds. The H+ in the protonated lithium metal compounds was speculated to be more readily exchangeable with hydrons in the aqueous solution compared with Li+ in the pristine lithium metal compounds, and the exchanged heavier isotopes were speculated to be more stably retained in the crystal structure compared with the light protons. When the tritiated water (157.7 kBq/kg) was reacted with the protonated lithium metal compounds, the protonated lithium manganese nickel cobalt oxide was found to adsorb and retain twice as much tritium (163.9 Bq/g) as the protonated lithium manganese oxide (69.9 Bq/g) and the protonated lithium cobalt oxide (75.1 Bq/g) in the equilibrium state.

키워드

과제정보

This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) No. 2017M2A8A5015148).

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