Extraction chromatographic separations of tantalum and tungsten from hafnium and complex matrix constituents

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• 作者：Mathew S. Snow^a ; ^{mathew.snow@inl.gov} ; Martha R. Finck^a ; Kevin P. Carney^a ; Samuel S. Morrison^b
• 关键词：Tantalum ; Tungsten ; Hafnium ; TEVA ; TRU
• 刊名：Journal of Chromatography A
• 出版年：2017
• 出版时间：10 February 2017
• 年：2017
• 卷：1484
• 期：Complete
• 页码：1-6
• 全文大小：1430 K
• 卷排序：1484

文摘

Extraction chromatography enables extremely high Ta/Hf/W separation efficiencies. TEVA resin shows Ta Kd values up to 105 with Hf/W Kd values <10. TRU resin Kd values decrease from 103 to <10 at different acid concentrations. Ta and W purities >99% achievable using single TEVA-TRU separation.