Synergistic extraction and separation of rare earths from chloride medium by the mixture of HEHAPP and D2EHPA
Kuang, S; Zhang, Z; Li, Y; Wei, H; Liao, W
| HERO ID | 4868091 |
|---|---|
| In Press | No |
| Year | 2017 |
| Title | Synergistic extraction and separation of rare earths from chloride medium by the mixture of HEHAPP and D2EHPA |
| Authors | Kuang, S; Zhang, Z; Li, Y; Wei, H; Liao, W |
| Journal | Hydrometallurgy |
| Volume | 174 |
| Page Numbers | 78-83 |
| Abstract | A binary mixture of a-aminophosphonic acid extractant 2-ethylhexyl-3-(2-ethylhexylamino)pentan-3-yl-phosphonic acid (HEHAPP, H2A2) and di-(2-ethylhexyl) phosphoric acid (D2EHPA, H2B2) in n-heptane was employed for the extraction and separation of rare earths (REs) from chloride medium. A remarkable synergistic effect was observed in the Lu(lll) extraction by the mixture. The extracted species of Lu(Ill) was determined as LuH(4)Cl(2)A(3)B(2). The separation factors of adjacent heavy REs, i.e. SFEr/Ho., SFTm/Er, SFYb/Tm and SFLu/Yb, were of 1.45, 2.58, 2.77 and 1.77, which were much higher than those for other reported synergistic systems, suggesting that the mixture of HEHAPP and D2EHPA is a potential synergistic extraction system for the separation of heavy REs. |
| Doi | 10.1016/j.hydromet.2017.09.011 |
| Wosid | WOS:000416195200010 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Synergistic extraction; Rare earths; alpha-Aminophosphonic acid; Di-(2-ethylhexyl) phosphoric acid |