Selective lanthanide sorption and mechanism using novel hybrid Lewis base (N-methyl-N-phenyl-1,10-phenanthroline-2-carboxamide) ligand modified adsorbent

新規ハイブリットルイス塩基(N-メチル-N-フェニル-1,10-フェナントロリン-2-カルボアミド)配位子で修飾した吸着剤を用いた選択的ランタノイド吸着とそのメカニズム

Awual, M. R.; 小林 徹 ; 宮崎 有史; 元川 竜平   ; 塩飽 秀啓   ; 鈴木 伸一; 岡本 芳浩  ; 矢板 毅

Awual, M. R.; Kobayashi, Toru; Miyazaki, Yuji; Motokawa, Ryuhei; Shiwaku, Hideaki; Suzuki, Shinichi; Okamoto, Yoshihiro; Yaita, Tsuyoshi

The oxygen and nitrogen donor atoms containing Lewis base N-methyl-N-phenyl-1,10-phenanthroline-2-carboxamide (MePhPTA) ligand was synthesized and subsequently an adsorbent was prepared by direct immobilization onto mesoporous silica. The crystallography for the Sm-MePhPTA complex suggested that MePhPTA was strongly coordinated to Sm(III) with oxygen and nitrogen by forming a stable complex with two 5-membered rings. The data clarified that bond lengths between Sm(III) and amide oxygen (2.475 ) were shorter than Sm-N (2.662 ) in phenanthroline moiety indicating strong oxygen driven adsorbent.