Uranium hydroxide/oxide deposits on uranyl reduction

Ouchi, Kazuki ; Matsumura, Daiju ; Tsuji, Takuya ; Kobayashi, Toru ; Otobe, Haruyoshi ; Kitatsuji, Yoshihiro

We clarified the chemical state transformation of deposits following the reduction of uranyl ion (U $^{rm VI}$ O $_{2}$ $^{2+}$ ) from the results of electrochemical quartz crystal microbalance, impedance spectra and X-ray absorption fine structure measurements. We propose the following deposition mechanism: (1) U $^{rm IV}$ is formed by the disproportionation of U $^{rm V}$ . (2) U $^{rm IV}$ forms U $^{rm IV}$ hydroxide deposits, and (3) finally, the hydroxide deposits transform into U $^{rm IV}$ oxide, generally having a larger electrical resistance than the former.

Language	:	English
Journal	:	RSC Advances (Internet)
Volume	:	13
Number	:	24
Pages	:	p.16321 - 16326
Publication Year/Month	:	2023/05
Meeting title	:
Held date	:
Location (city)	:
Location (country)	:
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1039/D3RA02899B
DOI for research data	:
Keywords	:	Uranium; Electrodeposition; Chemical State
Research Facility	:	第4研究棟
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:

Accesses	:	- Accesses
Web of Science® Times Cited Count	:	Times Cited Count： If you would like to get the latest times cited, please access the Web of Science®. http://www.webofknowledge.com/wos
InCites™	:	Percentile:0 Category:Chemistry, Multidisciplinary
Altmetrics	:

Registration No. : AA20220928
JAEA Abstracts No. : 51000822
Paper Submission No. : 26769

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.