Characterization of the interaction of rare earth elements with P507 in a microfluidic extraction system using spectroscopic analysis

Kaihua Chen, Yuan He, C. Srinivasakannan, Shiwei Li, Shaohua Yin, Jinhui Peng, Shenghui Guo, Libo Zhang

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

An attempt to characterize the interaction of rare earth elements with P507 in a microfluidic extraction system containing lactic acid as complexing agent is made using spectroscopic (FT-IR, UV–Vis, NMR and MS) analysis. The role of lactic acid in the extraction process is analyzed. The extraction mechanism confirmed that lactic acid does not involve in the extraction reaction. A comparative analysis of the composition of the extracts using FT-IR, UV–Vis, NMR and MS methods, indicates that the extracted complexes of rare earth ions located in the center is formed by the cation exchange process between P–O–H and RE3+, and coordination process between P[dbnd]O and RE3+.

Original languageBritish English
Pages (from-to)453-460
Number of pages8
JournalChemical Engineering Journal
Volume356
DOIs
StatePublished - 15 Jan 2019

Keywords

  • Complex extraction
  • Microreactor
  • P507
  • Rare earths
  • Spectrum

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