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Extraction behavior of Mo and W from H$$_{2}$$SO$$_{4}$$ with Aliquat336 as homologues of seaborgium (Sg)

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

We have started studying sulphate-complex formation of a transactinide element, seaborgium (Sg). In this study, we report on the extraction behavior of carrier-free radioisotopes $$^{93m}$$Mo and $$^{181}$$W which are lighter homologs of Sg, from aqueous H$$_{2}$$SO$$_{4}$$ solution with amine extractant, Aliquat336, dissolved in toluene by a batch method. These radioisotopes were produced in the $$^{nat}$$Zr($$alpha$$,${it 2}$)$$^{93m}$$Mo and $$^{181}$$Ta(${it d}$,x${it n}$)$$^{181}$$W reactions at the RIKEN K70 AVF cyclotron. Results of the extraction experiments showed that the distribution ratios of Mo and W increase sharply above ~3.0 M H$$_{2}$$SO$$_{4}$$. Based on the slope analysis, it was indicated that anionic sulphate-complex of [MO$$_{2}$$(SO$$_{4}$$)$$_{2}$$]$$^{2-}$$ (M = Mo, W) are formed in $$>$$ 5 M H$$_{2}$$SO$$_{4}$$. These results suggest that the present system is applicable to the extraction of Sg.

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English

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2015 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2015)

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2015/12

Location (city)

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Honolulu

Location (country)

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U.S.A.

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no keyword

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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徳島大学; 理化学研究所仁科センター; 新潟大学; 茨城大学

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- Accesses

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