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ZIF-11을 이용한 수소 동위원소 분리

Hydrogen Isotope Separation by using Zeolitic lmidazolate Frameworks (ZIF-11)

  • 이슬지 (경남과학기술대학교 에너지공학과, 미래융복합연구소) ;
  • 오현철 (경남과학기술대학교 에너지공학과, 미래융복합연구소)
  • Lee, Seulji (Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology) ;
  • Oh, Hyunchul (Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology)
  • 투고 : 2020.08.27
  • 심사 : 2020.10.20
  • 발행 : 2020.12.27

초록

Hydrogen isotopes (i.e. deuterium and tritium) are supplied to the tokamak in the International Thermonuclear Experimental Reactor (ITER) fuel cycle. One important part of the ITER fuel cycle is the recycling of unused fuel back to the tokamak, as almost 99 % of fuel is unburned during fusion reaction. For this, cryogenic distillation has been used in the isotope separation system (ISS) of ITER, but this technique tends to be energy-intensive and to have low selectivity (typically below 1.5 at 24 K). Recently, efficient isotope separation by porous materials has been reported in the so-called quantum sieving process. Hence, in this study, hydrogen isotope adsorption behavior is studied using chemically stable ZIF-11. At low temperature (40 K ~ 70 K), the adsorption increases and the sorption hysteresis becomes stronger as the temperature increases to 70K. Molar ratio of deuterium to hydrogen based on the isotherms shows the highest (max. 14) ratio at 50 K, confirming the possibility of use as a potential isotope separation material.

키워드

참고문헌

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