EXTRACTION OF Se, Y, AND LANTHANIDES BY QUATERNARY AMMONIUM SALTS
- 1 September 1991
- journal article
- research article
- Published by Informa UK Limited in Solvent Extraction and Ion Exchange
- Vol. 9 (4), 623-635
- https://doi.org/10.1080/07366299108918074
Abstract
The separation of Sc and Y from the lanthanides by extraction with various quaternary ammonium salts was investigated. Aliquat-336,methyltrioctylammonium nitrate (MTOA), methyldibutylhexadecylammonium nitrate (MDBHDA) and tributylhexadecylammonium nitrate (TBHDA) were used as extractants. The synthesis of MDBHDA and TBHDA from industrial products is described. From the results obtained in the extraction studies of REE as a function of the parameters of aqueous and organic phases, we have determined the optimal separation conditions. The salting-out action in these systems of a great number of cations such as Al3+, Fe3+, Mg3+, Cu3+, Ni3+, Li3+, Cs3+, was investigated. To determine the functional dependences of the separation factors for the REE, the viscosity of the water layer around the ion was used.Keywords
This publication has 2 references indexed in Scilit:
- Microviscosity of ions and salting-out in the extraction of rare-earth and transplutonium elementsJournal of Radioanalytical and Nuclear Chemistry, 1989
- Extraction of the Elements as Quaternary (Propyl, Butyl, and Hexyl) Amine ComplexesAnalytical Chemistry, 1961