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Extraction behavior of Mo and W from H$$_{2}$$SO$$_{4}$$ and HF/HCl solutions into toluene with Aliquat336; Sulfate and fluoride complex formation of Mo and W towards chemical studies of seaborgium (Sg)

Aliquat336を用いたトルエンからH$$_{2}$$SO$$_{4}$$溶液ならびにHF/HCl溶液へのMoとWの抽出挙動; シーボーギウム(Sg)の化学研究に向けたMoとWの硫酸ならびにフッ化物錯体形成

豊嶋 厚史; 水飼 秋菜; 塚田 和明  ; 大江 一弘*; 羽場 宏光*; 小森 有希子*; 村上 昌史  ; 金谷 佑亮*; 佐藤 大輔*; 浅井 雅人  ; 佐藤 哲也   ; 永目 諭一郎 

Toyoshima, Atsushi; Mitsukai, Akina; Tsukada, Kazuaki; Oe, Kazuhiro*; Haba, Hiromitsu*; Komori, Yukiko*; Murakami, Masashi; Kaneya, Yusuke*; Sato, Daisuke*; Asai, Masato; Sato, Tetsuya; Nagame, Yuichiro

本研究では6族超重元素シーボーギウム(Sg)のオンライン溶媒抽出実験に適切な実験条件を探索するため、その同族元素MoとWの抽出挙動を調べた。第4級アミンAliquat336を用いたキャリアフリー放射性トレーサー$$^{93m}$$Moならびに$$^{177,179,181}$$Wのトルエンへの抽出実験を0.10 - 8.6M H$$_{2}$$SO$$_{4}$$と1.0$$times$$10$$^{-4}$$ - 5.0M HF/1.0M HClの条件で行った。-2の電荷を持つMoとWの陰イオン性硫酸錯体が、H$$_{2}$$SO$$_{4}$$ [H$$_{2}$$SO$$_{4}$$] $$>$$ 2Mの濃度範囲で抽出された。HF/1.0M HCl溶液では、-1の電荷を持つMoとWのオキシフッ化物錯体が形成されAliquat336により抽出されると評価された。これらの結果からSgの抽出に好ましい条件を議論する。

We have studied extraction behavior of group-6 elements Mo and W to search for suitable conditions for an on-line extraction experiment of their heavier homolog, seaborgium (Sg). Batch-wise extraction of carrier-free radiotracers $$^{93m}$$Mo and $$^{177,179,181}$$W were carried out from 0.10 - 8.6 M H$$_{2}$$SO$$_{4}$$ and 1.0$$times$$10$$^{-4}$$ - 5.0 M HF/1.0 M HCl into toluene with a quaternary ammonium compound, Aliquat336. Anionic sulfate complexes of Mo and W with charge - 2 were extracted with Aliquat336 from H$$_{2}$$SO$$_{4}$$ solutions with concentrations of [H$$_{2}$$SO$$_{4}$$] $$>$$ 2 M. In HF/1.0 M HCl, oxyfluoro complexes of Mo and W with charge - 1 were interpreted to be formed and extracted with Aliquat336. From these results, favorable conditions for the extraction of Sg are discussed.

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パーセンタイル:20.93

分野:Chemistry, Analytical

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