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Updated: Sep 15, 2025

Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants
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使用合成的胺碳酸从放射性残留液中有效地回收Th和稀土:机制研究和工艺开发

Xinyu Fu1, Yun Gao2, Peilin Lei3

  • 1CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, PR China; Fujian Research Center for Rare Earth Engineering Technology, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen, Fujian, 361021, PR China; Fujian College, University of Chinese Academy of Sciences, Fuzhou, Fujian, 350002, PR China; Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China.

Journal of environmental management
|July 12, 2025
PubMed
概括

本研究引入了用于从放射性废物中回收稀土 (RE) 和 (Th) 的新型胺基碳酸提取剂. 该过程有效地去除Th,并集中RE,满足工业分离的要求.

关键词:
提取 提取 提取降水量 降水量 降水量放射性残留物 放射性残留物稀土是一种稀土.分离 分离 分离 分离.是一种.

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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The DCC-promoted synthesis of amides begins with the protonation of DCC by carboxylic acid. The protonation makes it a better acceptor. Next, the addition of carboxylate to the protonated carbodiimide gives a reactive acylating agent.
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