Iron Extraction with Di(2-Ethylhexyl)dithiophosphoric Acid and a Binary Extractant Based on It
- Authors: Voshkin A.A.1,2,3, Belova V.V.1, Zakhodyaeva Y.A.1
-
Affiliations:
- Kurnakov Institute of General and Inorganic Chemistry
- Moscow Technological University
- Moscow Polytechnical University
- Issue: Vol 63, No 3 (2018)
- Pages: 387-390
- Section: Physical Chemistry of Solutions
- URL: https://journal-vniispk.ru/0036-0236/article/view/168544
- DOI: https://doi.org/10.1134/S0036023618030233
- ID: 168544
Cite item
Abstract
Iron(III) extraction with trioctylmethylammonium di(2-ethylhexyl)dithiophosphate and di(2- ethylhexyl)dithiophosphoric acid was studied. It was shown that di(2-ethylhexyl)dithiophosphoric acid extracts iron in the form of the complex FeA2, regardless of the oxidation state of iron in the initial aqueous solution. It was also shown that the iron(III) extraction with trioctylmethylammonium di(2-ethylhexyl)dithiophosphate over a wide acidity range occurs primarily to produce extractable substance (R4N)FeCl4; and at pH > 1, iron(II) dialkyldithiophosphate is also extracted into the organic phase. It was established that, in a system with a binary extractant, iron can be efficiently stripped from the organic phase with water or diluted solutions of mineral acids.
About the authors
A. A. Voshkin
Kurnakov Institute of General and Inorganic Chemistry; Moscow Technological University; Moscow Polytechnical University
Author for correspondence.
Email: aav@igic.ras.ru
Russian Federation, Moscow, 119991; Moscow, 119571; Moscow, 107023
V. V. Belova
Kurnakov Institute of General and Inorganic Chemistry
Email: aav@igic.ras.ru
Russian Federation, Moscow, 119991
Yu. A. Zakhodyaeva
Kurnakov Institute of General and Inorganic Chemistry
Email: aav@igic.ras.ru
Russian Federation, Moscow, 119991
Supplementary files
