Extraction of Thorium and Uranium from Chloride Solutions by Tri-n-Butyl Phosphate and Tri-n-Octyl Phosphine Oxide

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概要

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• The extraction of thorium and uranium chlorides by TBP and TOPO was studied. The composition of complexes extracted from the chloride solutions of low acid concentration was established by partition study to be UO<SUB>2</SUB>Cl<SUB>2</SUB>(TOPO)2, UCl<SUB>4</SUB>(TOPO)<SUB>2</SUB>, ThCl<SUB>4</SUB>(TOPO)<SUB>2</SUB> and UCl<SUB>4</SUB>(TBP)<SUB>2</SUB>. Composition of the thorium complex in the TBP phase free from hydrochloric acid was revealed by infrared study to be ThCl<SUB>4</SUB>(TBP)<SUB>4</SUB>. The extraction behavior of thorium chloride by TBP was different from that of U(IV) and Pu(IV) chloride, and the composition of the complex was presumed to be HThCl<SUB>5</SUB>(TBP)<SUB>4</SUB> in the extraction from concentrated chloride solution containing hydrochloric acid.

• 一般社団法人 日本原子力学会の論文

著者

• WATANABE Kenju

  Japan Atomic Energy Research Institute

関連論文

• Separation of Transplutonium Elements from Neutron Irradiated Americium-241, (II):Detection of Berkelium and Californium
• The Extraction of Curium and Americium by Tri-n-Octyl Phosphine Oxide
• Extraction of Thorium and Uranium from Chloride Solutions by Tri-n-Butyl Phosphate and Tri-n-Octyl Phosphine Oxide
• Precipitation of Plutonium (IV) Tungstate

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