Similarity of Rare Earth Extraction by Acidic Extractant Bis(2-ethylhexyl) Phosphate (HDEHP) Supported on a Dodecylamino-Group-Containing Graft Chain and by HDEHP Dissolved in Dodecane

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  • Sasaki Taka-aki
    Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University
  • Uchiyama Shoichiro
    Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University
  • Fujiwara Kunio
    Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University KJK Co., Ltd.
  • Sugo Takanobu
    KJK Co., Ltd.
  • Umeno Daisuke
    Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University
  • Saito Kyoichi
    Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University

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Other Title
  • ドデシルアミノ基を有するグラフト鎖上に担持した酸性抽出試薬リン酸ビス（2-エチルヘキシル）（HDEHP）とドデカンに溶解したHDEHPのレアアース抽出での類似性
  • ドデシルアミノキ オ ユウスル グラフト サ ジョウ ニ タンジシタ サンセイ チュウシュツ シヤク リンサン ビス(2-エチルヘキシル)(HDEHP)ト ドデカン ニ ヨウカイ シタ HDEHP ノ レアアース チュウシュツ デ ノ ルイジセイ

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Abstract

Impregnation was used to affix bis(2-ethylhexyl) phosphate (HDEHP) to the dodecylamino group of a polymer chain grafted onto a 6-nylon fiber. The distribution coefficients of Nd and Dy ions on the fiber agreed well those for HDEHP in dodecane. HDEHP supported on the hydrophobic graft chain was found to behave similarly to HDEHP dissolved in organic solvent. Nd and Dy ions were successfully separated by elution chromatography with an HDEHP-impregnated fiber-packed bed, and leakage of HDEHP from the bed was found to be negligible during the chromatography.

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