Coordinate polymer - メーカー・企業と業務用製品 | イプロスものづくり

One-step separation of neodymium and dysprosium without using organic solvents.

Keywords: Neodymium, Dysprosium, Separation, Low Environmental Impact, Coordination Polymers

Neodymium (Nd) magnets containing dysprosium (Dy) are high-performance magnets that enable energy-saving technologies such as motors. As the need to recycle Nd and Dy from used products increases in order to boost domestic self-sufficiency in the future, it is crucial to efficiently separate the components within the magnets. Traditional separation methods, such as solvent extraction, have the drawback of using large amounts of organic solvents. If Nd and Dy can be efficiently separated and recovered using only water as a solvent, it could become a superior separation method in terms of lower environmental impact compared to conventional methods. This research discovered that by utilizing coordination polymerization reactions, Nd and Dy can be precipitated and separated in one step using only water as the solvent. This study demonstrates that by incorporating organic ligands into the traditionally inorganic salt-based precipitation separation, the separation efficiency of Nd and Dy can be improved.