Preparation of a Core-shell Adsorbent for Lithium Isotope Separation

• Project/Area Number: 26289354
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: Nagoya University
• Principal Investigator: Sugiyama Takahiko 名古屋大学, 工学(系)研究科(研究院), 准教授 (90353440)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000); Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 同位体分離 / ブランケット / リチウム / 置換クロマトグラフィー / コアシェル型 / 吸着剤 / 分離性能解析 / 数値シミュレーション / コアシェル型吸着剤 / コアシェル型担体

Outline of Final Research Achievements

For the purpose of large-scale production of blanket material for nuclear fusion, isotope enrichment of lithium 6 to 90 % by displacement chromatography was investigated. An adsorbent was prepared by impregnating core-shell type porous silica beads with benzo-15-crown-5 ether dispersed in an organic solvent. The HETP value was obtained as 4 cm for the column packed with the adsorbent. A process with feed and extracts were numerically simulated using parameters obtained by the experiments. The ratio of feed and extracts to the hold-up in the adsorption band was optimized so that the separative power was maximized. By a simple scale-up 35 columns of 50 cm in diameter were required for the production of 90 % enriched lithium 6 at a rate of 100 t/y.

Research Products

• [Journal Article] Preparation of benzo-15-crown-5 adsorbents for the separation of lithium isotopes by displacement chromatography (2017)
  • Author(s): T. Sugiyama, K. Sugiura
  • Journal Title: Fusion Science and Technology Volume: 印刷中
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Separative Analyses of a Chromatographic Column Packed with a Core-shell Adsorbent for Lithium Isotope Separation (2015)
  • Author(s): T. Sugiyama, K. Sugiura, Y. Enokida, I. Yamamoto
  • Journal Title: Fusion Science and Technology Volume: 67 Pages: 584-587
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Separative Analyses of a Chromatographic Column Packed with a Core-Shell Adsorbent for Lithium Isotope Separation (2015)
  • Author(s): Takahiko Sugiyama, Kei Sugiura, Youichi Enokida, Ichiro Yamamoto
  • Journal Title: Fusion Science and Technology Volume: 67 Issue: 3 Pages: 584-587
  • DOI: 10.13182/fst14-t85
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 置換クロマトグラフィー法によるリチウム同位体濃縮プロセスの過渡応答解析 (2017)
  • Author(s): 杉山貴彦
  • Organizer: 日本原子力学会「2017年春の年会」
  • Place of Presentation: 東海大学 神奈川
  • Year and Date: 2017-03-27
• [Presentation] 置換クロマトグラフィー法によるリチウム同位体分離に用いる吸着剤の開発 (2016)
  • Author(s): 杉山貴彦，杉浦圭
  • Organizer: 第11回核融合エネルギー連合講演会
  • Place of Presentation: 九州大学 伊都
  • Year and Date: 2016-07-15
• [Presentation] Preparation of a Core-shell Adsorbent for Lithium Isotope Separation (2016)
  • Author(s): T. Sugiyama
  • Organizer: 11th International Conference on Tritium Science and Technology
  • Place of Presentation: Charleston Marriott, Charleston, South Carolina, USA
  • Year and Date: 2016-04-17
  • Int'l Joint Research