層状のA2Sn3S7·1.25H2O (A=有機カチオン) が,希土元素の回収のための効率的なイオン交換器として
Xing-Hui Qi1, Ke-Zhao Du1, Mei-Ling Feng1,2
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, P. R. China.
Journal of the American Chemical Society
|March 7, 2017
まとめ
新しいカルコゲニド材料であるFJSM-SnSは,複雑な溶液から希土元素 (REEs) を効率的に回収します. この優れたイオン交換器は,高速な動力学と持続可能な REE リサイクルのための高容量を提供します.
科学分野:
- 材料科学
- 環境科学
- 無機化学
背景:
- 稀土元素はハイテク産業に不可欠です
- 複合的な水溶液から再生可能エネルギーの効率的な回収とリサイクルは依然として困難です.
- 先進的なイオン交換器の開発は,持続可能な REE管理に不可欠です.
研究 の 目的:
- REEの効率的な回収とリサイクルのための新しいイオン交換器を探求する.
- REEイオン交換器として新しいカルコゲニド材料,FJSM-SnSを提示する.
- FJSM-SnSが複雑な水溶液から REEsを除去する能力を評価する.
主な方法:
- カルコゲニドイオン交換器 (Me2NH2) 1.33(Me3NH) 0.67Sn3S7·1.25H2O (FJSM-SnS) の合成と特徴づけ
- 吸収能力,運動性,選択性,pH抵抗を決定するイオン交換実験.
- REEの回収率とエリューション効率の評価
主要な成果:
- FJSM-SnSは急速なイオン交換 (<5分間の均衡時間) を示した.
- ヨーロッパウム (139 mg/g),テルビウム (147 mg/g),ネオジム (126 mg/g) の高い吸収能力が観察されました.
- この材料は,高いpH抵抗 (1.9-8.5),優れた選択性,低濃度REEsの高い回収率 (> 99%) を示し,既存の吸収剤を上回った.
結論:
- FJSM-SnSは,高効率で選択的なイオン交換機で,REEの回収を可能にします.
- この材料は,従来の吸収剤と比較して,容量と運動学において大きな利点があります.
- この発展は,ハイテク産業のための持続可能な REE リサイクルと循環型経済を支援します.
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