Synergistic extraction or lanthanides(3) with 2-thenoyltrifluoroacetone and pyridine as ion-pairs and adducts

• HIROSE Shoichi

  Department of Chemistry, Faculty of Science, Science University of Tokyo

• INOUE Masayuki

  Department of Chemistry, Faculty of Science, Science University of Tokyo

• HASEGAWA Yuko

  Department of Chemistry, Faculty of Science, Science University of Tokyo

書誌事項

タイトル別名

• Synergistic Extraction of Lanthanides(III) with 2-Thenoyltrifluoroacetone and Pyridine as Ion-Pairs and Adducts

抄録

The extraction of lanthanides(III) (Ln(III)) from a 0.1 M sodium perchlorate solution with 2-thenoyltrifluoroacetone (Htta, HA) with pyridine (Py) into chloroform was investigated in a thermostatted room at 298 K, in order to examine in detail the variation of the reactivity of Ln(tta)₃ with an N-donor ligand across the lanthanide series. It was found that i) The extracted species was the ion-pair (HPy)⁺LnA₄^- as well as LnA₃Py and LnA₃. ii) The values of the formation constants of LnA₃ adducts with pyridine are smaller than those with carboxylic acids across lanthanide series. iii) The variation in the formation constants of the ion-pairs represented by Ln³⁺ + H⁺ + 4A^- + Py_(o) ⇋ (HPy)⁺LnA₄^-_(o) showed a maximum value in the vicinity of Nd or Sm. Then the separation factor (SF) for Pr from Sm estimated from the ion-pair extraction is a little larger than that from LnA₃. However, the SF calculated for the adduct, LnA₃Py, was not improved on comparison with the SF for LnA₃.

収録刊行物

• Solvent Extraction Research and Development, Japan

  Solvent Extraction Research and Development, Japan 17 (0), 225-236, 2010

  日本溶媒抽出学会

キーワード

• General Chemical Engineering
• General Chemistry

詳細情報

• CRID: 1390001205742993792
• NII論文ID: 130005056888
• NII書誌ID: AA11114608
• DOI: 10.15261/serdj.17.225
• ISSN: 21884765
• ISSN: 13417215
• NDL書誌ID: 10728795
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10728795
• 本文言語コード: en
• データソース種別:
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