|About this Abstract
||Part C-1: Hydrometallurgy 2018
||T-20: Solvent Extraction of Rh(III), Pt(IV) and Pd(II) from HCl with Amide-containing Tertiary Amine Compounds
||Hirokazu Narita, Mikiya Tanaka
|On-Site Speaker (Planned)
We have found that amide-containing tertiary amine (ACTA) compounds exhibit high extraction efficiency for platinum group metal (PGM) complex anions in HCl solution. Among ACTA compounds, N-2-ethylhexyl-bis(N-di-2-ethylhexyl-ethylamide)amine (EHBAA) seems to be the most suitable for practical use, because EHBAA is superior in terms of solubility of extractants in practical diluents, formation of a third phase and so on. EHBAA extracted about 100% of Pd(II) and Pt(IV) in the studied HCl concentration range (0.5-10 M). The extraction efficiency of Rh(III) drastically decreased above 3 M HCl. In contrast, both Fe(III) and Cu(II) were quantitatively extracted above 3 M HCl. The extracted Fe(III) and Cu(II) were selectively scrubbed with distilled water over PGMs.
||Planned: At-meeting proceedings