2025-07-22 カリフォルニア大学サンタバーバラ校（UCSB）
＜関連情報＞
- https://news.ucsb.edu/2025/021959/simple-filter-rare-earth-elements-will-ensure-clean-domestic-supply-these-crucial
- https://www.nature.com/articles/s42004-025-01565-4
希土類元素の選択的抽出・分離のための18員環大環状化合物の樹脂への付加 18-membered macrocycle appended on resin for selective rare earth element extraction and separation
Yangyang Gao,Kate Ivanovich,Sean Medin,Brooke Pian,Samantha N. MacMillan,Alexa M. Schmitz & Justin J. Wilson
Communications Chemistry Published:05 June 2025
DOI:https://doi.org/10.1038/s42004-025-01565-4
Abstract
The rare earth elements are critically important for a wide range of modern technologies. However, obtaining them selectively and efficiently from natural sources and recycled materials is challenging and often requires harsh or wasteful conditions. Here we show that a macrocyclic chelator appended to a solid resin can overcome this challenge by acting as a robust platform for both the extraction and separation of these elements. This resin preferably captures the large rare earth elements in mixtures of these ions, giving rise to higher extraction efficiencies for them over the smaller ions. We further demonstrate that this resin can be used to separate rare earth elements. As a proof-of-principle validation, this resin was demonstrated to selectively extract rare earth elements in the presence of many different types of competing metal ions in a bioleachate solution obtained from autoslag waste, leading to their enrichment.
