镤的化学性质。三、以TTA为螯合剂的溶剂萃取法研究镤(V)硫酸盐配合物

Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1967-04-01 DOI:10.1246/BCSJ.40.821

T. Mitsuji, Shin Suzuki

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引用次数: 5

摘要

采用纸电泳和ta -苯萃取法研究了五价镤在硫酸溶液中的行为。研究结果表明，Pa(OH)2(SO4)+离子主要存在于pH 0.4 ~ 2.2的稀硫酸溶液中，五价镤与硫酸离子的络合反应为:Pa(OH)4++2H++SO42−\ightleftarrowsPa(OH)2(SO4)++2H2O。在离子强度为1.38时，用溶剂萃取法测定了Pa(OH)2(SO4)+的稳定常数为6.4。

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The Chemistry of Protactinium. III : A Study of the Sulfate Complex of Protactinium(V) by the Solvent Extraction Technique Using TTA as the Chelating Agent

The behavior of pentavalent protactinium in sulfuric acid solutions was investigated by paper electrophoresis and by the TTA-benzene extraction method. From the results of this investigation, it is recognized that the Pa(OH)2(SO4)+ ion exists predominantly in dilute sulfuric acid solutions (pH 0.4–2.2), and that the complexing reaction of pentavalent protactinium by the sulfate ion may proceed as;Pa(OH)4++2H++SO42−\ightleftarrowsPa(OH)2(SO4)++2H2O.The stability constant of Pa(OH)2(SO4)+ was also determined by the solvent extraction method to be 6.4 at an ionic strength of 1.38.

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Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy

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