Title:
配位高分子化を利用するレアメタルの水系分別沈殿法
Document Type and Number:
Japanese Patent JP6411199
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a method for selectively separating a rare metal such as indium and a rare earth, which is a substance that is usually difficult to be separated, at low cost, particularly a method for selectively separating dysprosium ions from an aqueous solution containing neodymium ions and the dysprosium ions at low cost. Rare metal ions can be separated by carrying out the selective coordination polymerization of the rare metal ions in an aqueous solution containing the rare metal ions using a water-soluble phosphoric acid diester, e.g., dibutyl phosphate ester and hydrogen=bis[2-(methacryloyloxy)ethyl] phosphate, as a coordination polymer forming agent to cause the fractional precipitation of the ions.
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Inventors:
Yuko Handa
Kenta Oi
Koichi Narita
Mikiya Tanaka
Akihiro Wakisaka
Kenta Oi
Koichi Narita
Mikiya Tanaka
Akihiro Wakisaka
Application Number:
JP2014248272A
Publication Date:
October 24, 2018
Filing Date:
December 08, 2014
Export Citation:
Assignee:
National Institute of Advanced Industrial Science and Technology
International Classes:
C22B3/44; C22B58/00; C22B59/00
Domestic Patent References:
| JP62164838A | ||||
| JP62176914A | ||||
| JP2005152756A | ||||
| JP55041998A | ||||
| JP2008212898A | ||||
| JP2015078396A |
Foreign References:
| EP0221760A2 | ||||
| WO2009051144A1 | ||||
| CN101878220A | ||||
| US20050124765 | ||||
| US4372922 |