Environmentally friendly separation of dysprosium and neodymium by fractional precipitation of coordination polymers

被引：8

作者：

Tasaki-Handa, Yuiko ^{[1
]}

Abe, Yukie ^{[1
]}

Ooi, Kenta ^{[1
]}

Narita, Hirokazu ^{[1
]}

Tanaka, Mikiya ^{[1
]}

Wakisaka, Akihiro ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Inst Environm Management Technol, Tsukuba, Ibaraki, Japan

来源：

RSC ADVANCES | 2014年 / 4卷 / 39期

关键词：

ION-EXCHANGE;

D O I：

10.1039/c4ra00257a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Against a backdrop of increasing demand, the recovery of neodymium (Nd) and especially dysprosium (Dy) from manufacturing scraps and used magnets has necessitated the development of Nd/Dy separation technologies. To this end, we suggest a simple and environmentally friendly separation method by fractional precipitation of coordination polymers (CPs)-extended complexes of metal ions and organic ligands. With the di(2-ethylhexyl) phosphoric acid ligand functioning as a precipitant, Dy was exclusively precipitated as a CP due to its precipitation equilibrium that is considerably different from that of Nd.

引用

页码：20496 / 20498

页数：3