Published January 2021 | Version v1
Journal article Metadata-only

Extraction behavior of several lanthanides from nitric acid with DMDODGA in [C4mim][NTf2] ionic liquid

Creators

  • 1. Harbin Engineering University, Heilongjiang Province, Harbin (China). Fundamental Science On Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology
  • 2. Nuclear Power Institute of China, Sichuan Province, Chengdu (China). Science and Technology On Reactor System Design Technology Laboratory
  • 3. China Institute of Atomic Energy, Beijing (China)

Description

The extraction behavior of several lanthanide ions (La(III), Nd(III), Sm(III), Gd(III), Yb(III)) from the nitric acid medium using ionic liquid [C4mim][NTf2] solvent containing N,N'-dimethyl-N,N'-dioctyl-3-oxadiglycolamide (DMDODGA) was studied. The effects of the concentration of HNO3, H+ and NO3- in aqueous phase, as well as the DMDODGA concentration and temperature on the distribution ratio of Ln(III) were analyzed. The distribution ratio of lanthanide ions into [C4mim][NTf2] is much higher than that reported for aliphatic hydrocarbon diluents. The extraction mechanism was demonstrated to agree with the cation-exchange mechanism. The stoichiometric ratio of Ln (III)/DMDODGA complex is 1:3 or 1:4. (author)

Additional details

Publishing Information

Journal Title
Journal of Radioanalytical and Nuclear Chemistry
Journal Volume
327
Journal Issue
1
Journal Page Range
p. 565-573
ISSN
0236-5731
CODEN
JRNCDM

INIS

Country of Publication
Hungary
Country of Input or Organization
Hungary
INIS RN
52035281
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AMIDES; AQUEOUS SOLUTIONS; EXTRACTION; GLYCOLS; MOLTEN SALTS; NITRIC ACID; RARE EARTHS; SOLVENTS
Descriptors DEC
ALCOHOLS; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; METALS; MIXTURES; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; SALTS; SEPARATION PROCESSES; SOLUTIONS

Optional Information

Notes
40 refs.