Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2014, Vol. 25 ›› Issue (4): 040301 doi: 10.13538/j.1001-8042/nst.25.040301

• NUCLEAR CHEMISTRY,RADIOCHEMISTRY,RADIOPHARMACEUTICALS AND NUCLEAR MEDICINE • Previous Articles     Next Articles

Synthesis of N,N'-dimethyl-N,N'-didecyl-3-oxa-diglycolamide for extraction of lanthanides

ZHANG Liao-Ning, WANG Ya-Qun, SUN Guo-Xin, ZHOU He-Fang, DANG Qing-Yi, CUI Yu   

  1. 1School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
  • Supported by:

    Supported by the National Natural Science Foundation of China (Nos. 21077044 and 21171069)

PDF ShareIt Export Citation
ZHANG Liao-Ning, WANG Ya-Qun, SUN Guo-Xin, ZHOU He-Fang, DANG Qing-Yi, CUI Yu . Synthesis of N,N'-dimethyl-N,N'-didecyl-3-oxa-diglycolamide for extraction of lanthanides.Nuclear Science and Techniques, 2014, 25(4): 040301     doi: 10.13538/j.1001-8042/nst.25.040301

Abstract:

A novel extractant, N,N'-dimethyl-N,N'-didecyl-3-oxa-diglycolamide (DMDDDGA), was designed and synthesized for extraction of lanthanides in the nuclear fuel reprocessing. The extraction behaviors of Gd, Dy, Er and Ho from nitric acid solution were investigated using DMDDDGA in chloroform. The effects of nitric acid concentration, extractant concentration, and temperature on the extraction were investigated. The distribution ratio of lanthanides increases with concentrations of the extractant and nitric acid, but decreases with increasing temperature, which indicates that the extraction process is exothermic. FT-IR spectra indicated that the C=O in DMDDDGA is coordinated with metal ion in the extracted species and the stoichiometries of lanthanides(III) complex are Gd(NO3)33DMDDDGA, Dy(NO3)34DMDDDGA, Er(NO3)34DMDDDGA, and Ho(NO3)34DMDDDGA.

Key words: N,N'-dimethyl-N,N'-didecyl-3-oxa-diglycolamide, Extraction, Lanthanide, Nitric acid solution