Synergistic extraction of rare earth ions by 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone and trioctylphousphine oxide in paraffin wax

Gao Jinzhang, Fan Haiyan, Peng Bo, Kang Jingwan

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The paraffin wax was used as an organic solvent for 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) and trioctylphousphine oxide (TOPO) in the extraction of rare earth ions (La3+, Pr3+, Eu3+, Yb3+ and Ho3+) at 70°C. The composition of the extracted specices were given as RE (PMBP)3(TOPO)2 by means of slope analysis. The variation of the synergistic extraction equilibrium constant (Ksex) was studied at 55°C-70°C . The thermodynamic data obtained showed that the synergistic extraction of rare earth ions by PMBP and TOPO in molten paraffin wax is exothermic and the extracted complexes were formed by TOPO bonding to the outer sphere hydration.

Original languageEnglish
Pages (from-to)25-26
Number of pages2
JournalRare Metals
Volume16
Issue number1
Publication statusPublished - 1997

Keywords

  • PMBP
  • Paraffin wax
  • Rare earth
  • Synergistic extraction
  • TOPO

ASJC Scopus subject areas

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

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