Abstract
The synergistic extraction of rare-earth metals by a β-diketone and an organophosphine oxide is described. A combination of 2-thenoyltrifluoroacetone (HTTA) and tri-n-octyl phosphine oxide (TOPO) was found to be effective in synergistically extracting rare-earth metals into an ionic liquid (IL). The synergistic effect was strongly influenced by the diluent in which the extractants were dissolved. Extraction efficiencies for all the rare-earth metal ions were enhanced by synergy when a conventional organic solvent was used (n-dodecane). However, the synergistic effect in the IL preferentially improved the scandium extraction, leading to higher selectivity for Sc than for other rare-earth metals. Slope analysis was used to assess each extraction system, and the IL itself was found to be directly involved in the complex formation of the metal extraction system.
| Original language | English |
|---|---|
| Pages (from-to) | 656-662 |
| Number of pages | 7 |
| Journal | JOURNAL OF CHEMICAL ENGINEERING OF JAPAN |
| Volume | 47 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Jan 1 2014 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
Cite this
Synergistic extraction of rare-earth metals and separation of scandium using 2-thenoyltrifluoroacetone and tri-n-octylphosphine oxide in an ionic liquid system. / Zhao, Zhigang; Baba, Yuzo; Kubota, Fukiko; Kamiya, Noriho; Goto, Masahiro; Kamiya, Noriho; Goto, Masahiro.
In: JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, Vol. 47, No. 8, 01.01.2014, p. 656-662.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Synergistic extraction of rare-earth metals and separation of scandium using 2-thenoyltrifluoroacetone and tri-n-octylphosphine oxide in an ionic liquid system
AU - Zhao, Zhigang
AU - Baba, Yuzo
AU - Kubota, Fukiko
AU - Kamiya, Noriho
AU - Goto, Masahiro
AU - Kamiya, Noriho
AU - Goto, Masahiro
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The synergistic extraction of rare-earth metals by a β-diketone and an organophosphine oxide is described. A combination of 2-thenoyltrifluoroacetone (HTTA) and tri-n-octyl phosphine oxide (TOPO) was found to be effective in synergistically extracting rare-earth metals into an ionic liquid (IL). The synergistic effect was strongly influenced by the diluent in which the extractants were dissolved. Extraction efficiencies for all the rare-earth metal ions were enhanced by synergy when a conventional organic solvent was used (n-dodecane). However, the synergistic effect in the IL preferentially improved the scandium extraction, leading to higher selectivity for Sc than for other rare-earth metals. Slope analysis was used to assess each extraction system, and the IL itself was found to be directly involved in the complex formation of the metal extraction system.
AB - The synergistic extraction of rare-earth metals by a β-diketone and an organophosphine oxide is described. A combination of 2-thenoyltrifluoroacetone (HTTA) and tri-n-octyl phosphine oxide (TOPO) was found to be effective in synergistically extracting rare-earth metals into an ionic liquid (IL). The synergistic effect was strongly influenced by the diluent in which the extractants were dissolved. Extraction efficiencies for all the rare-earth metal ions were enhanced by synergy when a conventional organic solvent was used (n-dodecane). However, the synergistic effect in the IL preferentially improved the scandium extraction, leading to higher selectivity for Sc than for other rare-earth metals. Slope analysis was used to assess each extraction system, and the IL itself was found to be directly involved in the complex formation of the metal extraction system.
UR - http://www.scopus.com/inward/record.url?scp=84906737492&partnerID=8YFLogxK
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U2 - 10.1252/jcej.14we360
DO - 10.1252/jcej.14we360
M3 - Article
AN - SCOPUS:84906737492
VL - 47
SP - 656
EP - 662
JO - Journal of Chemical Engineering of Japan
JF - Journal of Chemical Engineering of Japan
SN - 0021-9592
IS - 8
ER -