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Kinoshita, Ryoma; Sasaki, Yuji; Kaneko, Masashi; Matsumiya, Masahiko*; Shinoku, Kota*; Shiroishi, Hidenobu*
Hydrometallurgy, 222, p.106159_1 - 106159_12, 2023/10
Times Cited Count:2 Percentile:17.21(Metallurgy & Metallurgical Engineering)Solvent extraction is conducted using a total of 20 metals revealing high stability constants with Cl and hexahexyl-nitrilotriacetamide (NTAamide(C6)) extractant. The metals used here may behave as anions at high Cl concentrations, and NTAamide(C6), which contains a tertiary N atom, is protonated under acidic conditions. Most of the metal ions in this study display higher distribution ratios (D(M)) from HCl than those from HNO
, and exhibit 1:1 stoichiometries with NTAamide. Following the experimental results, the association constants and distribution coefficients of the group 12 elements are calculated via ion-pair extraction modeling using density functional theory calculations, and the simulations of D yield calculated values with the same trend as that of the measured values.
Motooka, Takafumi
QST-M-8; QST Takasaki Annual Report 2016, P. 73, 2018/03
Previous corrosion test of carbon steel in dilute artificial seawater under Co-60
-ray irradiation has indicated that corrosion rate was enhanced at absorbed dose rates:
100 Gy/h and rust color was changed from black to dark brown. In the present study, the corrosion mechanism of carbon steel under Co-60
-ray irradiation was investigated by identification of rust.
rays enhanced oxidation of iron ions from di-valent to tri-valent. Rust formed under irradiation had higher oxidation state.
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Bulletin of the Chemical Society of Japan, 36(6), p.717 - 721, 1963/00
Times Cited Count:16no abstracts in English
; ; ; Terakawa, Akira*
Bulletin of the Chemical Society of Japan, 36(6), p.721 - 727, 1963/00
Times Cited Count:20no abstracts in English