Selective extraction of scandium from yttrium and lanthanides with amic acid-type extractant containing alkylamide and glycine moieties

Yuzo Baba, Arisa Fukami, Fukiko Kubota, Noriho Kamiya, Masahiro Goto

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The liquid-liquid extraction of rare earth metal ions (scandium (Sc3+), yttrium (Y3+) and the lanthanides (La3+, Nd3+, Eu3+ and Dy3+)) was investigated using N-[N,N-di(2-ethylhexyl)aminocarbonylmethyl]glycine (D2EHAG). Scandium was extracted selectively from lanthanides under highly acidic conditions (0 < pH ≤ 1.5), and stripped easily using a mild acidic solution such as 1 mol dm-3 H2SO4. By comparing the extraction behavior with N,N-dioctyldiglycol amic acid, which has a similar molecular structure to D2EHAG, or the commercial alkyl monocarboxylic acid extractant, Versatic 10, it was concluded that the affinity of D2EHAG to scandium was caused by a chelating effect and the size recognition ability of D2EHAG. The extraction mechanism was examined, and it was proven that the trivalent scandium ion is extracted by forming a stable metal complex with four D2EHAG molecules. This journal is

Original languageEnglish
Pages (from-to)50726-50730
Number of pages5
JournalRSC Advances
Volume4
Issue number92
DOIs
Publication statusPublished - Jan 1 2014

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Scandium
Yttrium
Lanthanoid Series Elements
Rare earth elements
Glycine
Amino acids
Acids
Rare Earth Metals
Coordination Complexes
Liquids
Metal complexes
Chelation
Molecular structure
Rare earths
Metal ions
Ions
Molecules

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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Selective extraction of scandium from yttrium and lanthanides with amic acid-type extractant containing alkylamide and glycine moieties. / Baba, Yuzo; Fukami, Arisa; Kubota, Fukiko; Kamiya, Noriho; Goto, Masahiro.

In: RSC Advances, Vol. 4, No. 92, 01.01.2014, p. 50726-50730.

Research output: Contribution to journalArticle

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