検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Comparison of four bidentate phosphoric and diamide compounds for the extractability of actinides

4種の2座のリン酸化合物,ジアミド化合物のアクチノイド抽出に関しての比較

佐々木 祐二  ; 梅谷 重夫*

Sasaki, Yuji; Umetani, Shigeo*

リン酸化合物,ジアミド化合物の計4種を用いて、アクチノイド元素の抽出を調べ、その抽出性能を議論した。リン酸化合物はジアミド化合物より抽出性能が高い。抽出種の錯体組成はAm:L=1:3, Th:L, Np:L=1:1, U:L=1:2であり、異なる原子価のアクチノイドの抽出されやすさの順はU(VI)$$>$$Th(IV)$$>$$Am(III)$$>$$Np(V)であることを確認した。2座のリン酸化合物の一種である、BDPPMがアクチノイド抽出に最も優れていることがわかった。

Using four bidentate phosphonate and diamide ligands (L), the extraction of Am(III), Th(IV), Np(V) and U(VI) was studied and their extraction species and extractability in these extractants were discussed. The extractant containing the phosphoric oxygen has stronger chelation than that with the carbonyl oxygen atoms. The molar ratios in the main chemical forms extracted are 1:3 for Am:L, 1:1 for Th:L and Np:L and 1:2 for U:L from the relationship between log D(An) and log [L]. The order of D in actinides with the different oxidation states is U(VI) $$>$$ Th(IV) $$>$$ Am(III) $$>$$ Np(V), which shows the different order from that for HDEHP and HTTA, namely Th(IV) $$>$$ U(VI) $$>$$ Am(III) $$>$$ Np(V). It is clear that BDPPM, a diphosphoric dioxide extractant, has high extractability towards all An used here.

Access

:

- Accesses

InCites™

:

パーセンタイル:60.35

分野:Nuclear Science & Technology

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.