2013 Fiscal Year Annual Research Report
アミド型新規配位子とナノ吸着剤を用いたアクチノイドとランタノイドの選択的な分離
| Project/Area Number |
24860070
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
AWUAL MD Rabiul 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 研究員 (90633199)
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| Project Period (FY) |
2012-08-31 – 2014-03-31
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| Keywords | Lanthanide / EXAFS / Coordination / Transition metals / Precious metals / Cesium |
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| Research Abstract |
I have developed new functional materials which appear through stable complexation with lanthanide (Ln(III)) ions for selective separation of rare metals. Firstly, I prepared the meso-structural materials and O and N-donor atoms as different PTA ligands. Then the PTA ligands were successfully immobilized onto mesoporous materials. The functional design such O and N-donor atoms materials made stronger interaction with heavier Ln(III) ions as clarified by EXAFS analyses and X-ray crystal structures. The data also revealed that XAFS spectra of each Ln(III)-ligands are the same in Ln(III)-ligands-mesoprous materials which are very interesting and exceptional the solid functional mesoporous materials for heavier Ln(III) ions. The Ln-O bond distances were around 2.4 Å based on a crystallographic structure and EXAFS in the liquid state. However, the Yb-O bond distance was 2.19 Å which were unusual and interesting finding in the solid-state nanomaterials if the sum of ionic radii of carbonyl oxygen (PTA) and Yb3+ would be taken into account. Also I have conducted other transition and precious metals separation using specific ligand based materials at optimum condition.
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| Current Status of Research Progress |
Reason
25年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
25年度が最終年度であるため、記入しない。
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