Scholarlink

The separationSeparation and purification ofAdsorption rare earth elements (REEsRare earth elements (REEs)) is of paramount importance to stabilizing long-term feedstocks of precursor materials necessary for the manufacturing of advanced technologies. The chemical similarity of these elements has required the development of new extractionExtraction techniques that take advantage of minute differences in chemical properties. Since the late 1950s and 60s, synergistic effects of diluents and the addition of aqueous complexing agents to selectively suppress extractionExtraction have been applied to solvent extractionSolvent extraction systems. This research applies the concept of adding complexing agents to a solid–liquid system of nano powders functionalized with trimesic acid adsorbent. The addition of ethylenediaminetetraacetic acid (EDTA) increased competition between REERare earth elements (REEs) complexes for the available immobilized trimesic acid extractant sites. This resulted in increased separationSeparation between REEsRare earth elements (REEs), allowing for purities of individual REEsRare earth elements (REEs) in a synthetic four-element solutionSolution to be above 99% after two stages of loading.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effects of Aqueous Complexing Agents on the Selective Adsorption of Rare Earth Elements by Functionalized Nano Powders

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Easton Sadler,
  • Michael Free,
  • Prashant Sarswat

摘要

The separationSeparation and purification ofAdsorption rare earth elements (REEsRare earth elements (REEs)) is of paramount importance to stabilizing long-term feedstocks of precursor materials necessary for the manufacturing of advanced technologies. The chemical similarity of these elements has required the development of new extractionExtraction techniques that take advantage of minute differences in chemical properties. Since the late 1950s and 60s, synergistic effects of diluents and the addition of aqueous complexing agents to selectively suppress extractionExtraction have been applied to solvent extractionSolvent extraction systems. This research applies the concept of adding complexing agents to a solid–liquid system of nano powders functionalized with trimesic acid adsorbent. The addition of ethylenediaminetetraacetic acid (EDTA) increased competition between REERare earth elements (REEs) complexes for the available immobilized trimesic acid extractant sites. This resulted in increased separationSeparation between REEsRare earth elements (REEs), allowing for purities of individual REEsRare earth elements (REEs) in a synthetic four-element solutionSolution to be above 99% after two stages of loading.