Extraction of Np(Ⅳ) From Nitric Acid Solution With Di(1-Methyl-Heptyl) Methyl Phosphonate
oleh: XIAO Zhe, LI Feng-feng, WANG Yi-lin, ZHANG Ye, YU Ting, JIA Hong-wei, HE Hui, YE Guo-an
| Format: | Article |
|---|---|
| Diterbitkan: | Editorial Office of Journal of Nuclear and Radiochemistry 2022-04-01 |
Deskripsi
The extraction of Np(Ⅳ) from nitric acid medium by using di(1-methyl-heptyl) methyl phosphonate diluted in kerosene was investigated. The influences were studied in this research including the contact time, the concentration of DMHMP, HNO3 as well as nitrate and the temperature. Slope analyses indicate that Np(Ⅳ) is coordinated mainly in the form of neutral molecules and the extractant complex is Np(NO3)4·2DMHMP. The value of enthalpy change for the reaction is negative which means that the extraction of Np(Ⅳ) is an exothermic process.