2021 Fiscal Year Final Research Report
Development of preparative LC system for highly enriched lithium-6 as blanket material
| Project/Area Number |
19K03791
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 14020:Nuclear fusion-related
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | リチウム６ / 同位体分離 / 置換クロマトグラフィー / 大環状化合物 / ブランケット / 吸着材 |
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| Outline of Final Research Achievements |
The purpose is to develop a preparative chromatography system suitable for the production of highly enriched lithium-6 as a fusion blanket material. We tried to prepare a novel adsorbent on which macrocyclic compounds were immobilized using porous silica beads with a particle size of 5 μm as a carrier. Although it was not completed within the period, we achieved to synthesize the resin, and established a safe preparation environment with low humidity. The feasibility of the novel adsorbent was, then, improved. We prepared a simulation code for a highly concentrated lithium-6 production process by displacement chromatography method in which supply and extraction are performed intermittently. Effects of the feed/extraction rate and cut on the separative performance were evaluated, and the scale of the columns required for a 100-ton annual production plant were also evaluated.
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| Free Research Field |
核融合炉工学
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| Academic Significance and Societal Importance of the Research Achievements |
学術的な特色としては，置換クロマトグラフィーカラム内の複雑な物質移動現象及び，間欠生産となるプロセスの性質が，理論解析ならびに数値シミュレーションを通して明かになったことである．また，核融合炉工学の発展に寄与するものである．さらに，分離対象によって適切な環径の大環状化合物を用いることにより，リチウム同位体のみならず，様々な同位体の濃縮に応用できると考えられるため，同位体比調整材料を製造し利用する新たな産業の創設という将来性が見込める．
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