Electrochemical studies on uranium in the presence of organic acids

Suzuki, Yoshinori; Nankawa, Takuya ; Ozaki, Takuo; Onuki, Toshihiko; Francis, A. J.*; Enokida, Yoichi*; Yamamoto, Ichiro*

We examined electrochemical redox reactions of UO $_{2}$ $^{2+}$ in organic acid (oxalic, malonic, succinic, adipic, L-malic, and L-tartaric acids) solutions using cyclic voltammetry. A redox reaction of UO $_{2}$ $^{2+}$ /UO $_{2}$ $^{+}$ and an oxidation reaction of U(IV) were observed. The peak potentials of the UO $_{2}$ $^{2+}$ reduction showed a good linear relationship with the log of the stability constants of 1:1 UO $_{2}$ $^{2+}$ -organic complexes. We also revealed the redox reactions of UO $_{2}$ $^{2+}$ in the presence of malonic or oxalic acids between pH 1 and 6.

Language	:	English
Journal	:	Journal of Nuclear Science and Technology
Volume	:	44
Number	:	9
Pages	:	p.1227 - 1232
Publication Year/Month	:	2007/09
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Paper URL	:	https://doi.org/10.3327/jnst.44.1227
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Keywords	:	no keyword
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Registration No. : AA20070664
JAEA Abstracts No. : 36000051
Paper Submission No. : 3377

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