Electrochemical reduction of uranium(VI) in nitric acid-hydrazine solution on glassy carbon electrode

Y. Z. Wei; B. Fang; T. Arai; M. Kumagai

doi:10.1023/B:JRNC.0000046770.86000.d6

Electrochemical reduction of uranium(VI) in nitric acid-hydrazine solution on glassy carbon electrode

Y. Z. Wei, B. Fang, T. Arai, M. Kumagai

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Electrochemical reduction of U(VI) in nitric acid-hydrazine solution is greatly influenced by the concentration of nitric acid. In low acidity nitric acid solution such as 0.1M (M=mol/dm ³) HNO ₃, U(VI) was firstly reduced to U(V) and then partially reduced to U(IV). In high acidity nitric acid solution, e.g., 3-6M HNO ₃, an electrode process of two-electron transfer was involved in the reduction of U(VI). A higher U(IV) yield could be achieved in nitric acid solution with higher concentration. Hydrazine was very effective in suppressing the reduction of concentrated nitric acid, and the optimal concentration of hydrazine added was 0.075 to 0.15M in 6M HNO ₃.

Original language	English
Pages (from-to)	409-415
Number of pages	7
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	262
Issue number	2
DOIs	https://doi.org/10.1023/B:JRNC.0000046770.86000.d6
Publication status	Published - 2004
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry
Nuclear Energy and Engineering
Radiology Nuclear Medicine and imaging
Pollution
Spectroscopy
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

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title = "Electrochemical reduction of uranium(VI) in nitric acid-hydrazine solution on glassy carbon electrode",

abstract = "Electrochemical reduction of U(VI) in nitric acid-hydrazine solution is greatly influenced by the concentration of nitric acid. In low acidity nitric acid solution such as 0.1M (M=mol/dm 3) HNO 3, U(VI) was firstly reduced to U(V) and then partially reduced to U(IV). In high acidity nitric acid solution, e.g., 3-6M HNO 3, an electrode process of two-electron transfer was involved in the reduction of U(VI). A higher U(IV) yield could be achieved in nitric acid solution with higher concentration. Hydrazine was very effective in suppressing the reduction of concentrated nitric acid, and the optimal concentration of hydrazine added was 0.075 to 0.15M in 6M HNO 3.",

author = "Wei, {Y. Z.} and B. Fang and T. Arai and M. Kumagai",

note = "Funding Information: This work was financed by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) under the framework of “The Development of Innovative Nuclear Technologies”. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.",

year = "2004",

doi = "10.1023/B:JRNC.0000046770.86000.d6",

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volume = "262",

pages = "409--415",

journal = "Journal of Radioanalytical Chemistry",

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T1 - Electrochemical reduction of uranium(VI) in nitric acid-hydrazine solution on glassy carbon electrode

AU - Wei, Y. Z.

AU - Fang, B.

AU - Arai, T.

AU - Kumagai, M.

N1 - Funding Information: This work was financed by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) under the framework of “The Development of Innovative Nuclear Technologies”. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.

PY - 2004

Y1 - 2004

N2 - Electrochemical reduction of U(VI) in nitric acid-hydrazine solution is greatly influenced by the concentration of nitric acid. In low acidity nitric acid solution such as 0.1M (M=mol/dm 3) HNO 3, U(VI) was firstly reduced to U(V) and then partially reduced to U(IV). In high acidity nitric acid solution, e.g., 3-6M HNO 3, an electrode process of two-electron transfer was involved in the reduction of U(VI). A higher U(IV) yield could be achieved in nitric acid solution with higher concentration. Hydrazine was very effective in suppressing the reduction of concentrated nitric acid, and the optimal concentration of hydrazine added was 0.075 to 0.15M in 6M HNO 3.

AB - Electrochemical reduction of U(VI) in nitric acid-hydrazine solution is greatly influenced by the concentration of nitric acid. In low acidity nitric acid solution such as 0.1M (M=mol/dm 3) HNO 3, U(VI) was firstly reduced to U(V) and then partially reduced to U(IV). In high acidity nitric acid solution, e.g., 3-6M HNO 3, an electrode process of two-electron transfer was involved in the reduction of U(VI). A higher U(IV) yield could be achieved in nitric acid solution with higher concentration. Hydrazine was very effective in suppressing the reduction of concentrated nitric acid, and the optimal concentration of hydrazine added was 0.075 to 0.15M in 6M HNO 3.

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Electrochemical reduction of uranium(VI) in nitric acid-hydrazine solution on glassy carbon electrode

Abstract

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