2024-03-28T22:52:09Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00028354
2023-01-16T04:21:00Z
320:321:322
Chemical forms of molybdenum ion in nitric acid solution studied using liquid-phase X-ray absorption fine structure, Ultraviolet–Visible absorption spectroscopy and first-principles calculations
Watanabe, Shinta
Sato, Toshikazu
Nakaya, Masato
Yoshida, Tomoko
Onoe, Jun
open access
© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Molybdenum
XAFS
First-principles calculations
High-level radioactive nuclear liquid wastes
Vitrification processes
We have investigated chemical forms of molybdenum ion in nitric acid solution, using liquid-phase X-ray absorption fine structure, ultraviolet–visible absorption spectroscopy and first-principles calculations, from a viewpoint of disposal of high-level radioactive nuclear liquid wastes. The experimental and theoretical results indicated that Mo is a hexavalent ion and forms a hexa-coordination binuclear-structured complex in the 2M nitic acid solution. The predominant chemical species of Mo complexes in the 2M nitric acid solution (which is used for HLLW) are assigned to be [Mo2O5(H2O)6]^2+ and [Mo2O4(OH)(H2O)6]^3+. These species may play a crucial role of forming so-called yellow-phase in vitrified objects.
ファイル公開:2021-05-16
Elsevier
2019-05-16
eng
journal article
AM
http://hdl.handle.net/2237/00030548
https://nagoya.repo.nii.ac.jp/records/28354
https://doi.org/10.1016/j.cplett.2019.02.049
0009-2614
Chemical Physics Letters
723
76
81
https://nagoya.repo.nii.ac.jp/record/28354/files/manuscript.pdf
application/pdf
1.3 MB
2021-05-16