Molten solvent extraction behavior of trivalent La, Sm, Dy, and Yb with tri-n-butyl phosphate into molten paraffin wax at 60°C

Bo Peng, Jinzhang Gao, Haiyan Fan, Jingwan Kang, Wu Yang

Research output: Contribution to journalArticle

Abstract

The extraction behavior of La3+, Sm3+, Dy3+, and Yb3+ in sodium acetate-acetic acid medium was studied with tri-n-buryl phosphate (TBP) at 60°C using paraffin wax as a diluent. The extraction percentage is greater than 85% in the pH range of 6 to 8. The result of slope analysis method indicates that the compositions of the extracted species is found to be La(TBP)(OH)(Ac)2 for La3+ and Yb(TBP)(OH)3 for Yb3+. The effects of extracting time, the concentration of TBP in the organic phase and salts on the extraction efficiency were also discussed.

Original languageEnglish
Pages (from-to)7-11
Number of pages5
JournalRare Metals
Volume21
Issue number1
Publication statusPublished - Mar 1 2002

Keywords

  • Paraffin wax
  • Rare earth
  • Solvent extraction
  • TBP

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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