Ionic-Liquid-Based Acidic Aqueous Biphasic Systems for Simultaneous Leaching and Extraction of Metallic Ions

Matthieu Gras; Nicolas Papaiconomou; Nicolas Schaeffer; Eric Chainet; Farouk Tedjar; Joao A P Coutinho; Isabelle Billard

doi:10.1002/anie.201711068

Ionic-Liquid-Based Acidic Aqueous Biphasic Systems for Simultaneous Leaching and Extraction of Metallic Ions

Angew Chem Int Ed Engl. 2018 Feb 5;57(6):1563-1566. doi: 10.1002/anie.201711068. Epub 2018 Jan 5.

Authors

Matthieu Gras¹, Nicolas Papaiconomou^{1

2

3

4}, Nicolas Schaeffer⁵, Eric Chainet^{2

3}, Farouk Tedjar⁶, Joao A P Coutinho⁵, Isabelle Billard^{2

3}

Affiliations

¹ Univ. Grenoble-Alpes, LEPMI, 38000, Grenoble, France.
² Univ. Savoie, LEPMI, 73000, Chambéry, France.
³ CNRS, LEPMI, 38000, Grenoble, France.
⁴ Current address: Université Côte d'Azur, CNRS, Institut de Chimie de Nice, Nice, France.
⁵ CICECO, Dep of Chemistry, Univ. Aveiro, 3810-193, Aveiro, Portugal.
⁶ Recupyl SAS, rue de la métallurgie, 38420, Domène, France.

PMID: 29178431
DOI: 10.1002/anie.201711068

Abstract

The first instance of an acidic aqueous biphasic system (AcABS) based on tributyltetradecyl phosphonium chloride ([P₄₄₄₁₄ ][Cl]) and an acid is here reported. This AcABS exhibits pronounced thermomorphic behavior and is shown to be applicable to the extraction of metal ions from concentrated acidic solutions. Metal ions such as cobalt(II), iron(III), platinum(IV) and nickel(II) are found to partition preferentially to one of the phases of the acidic aqueous biphasic system and it is here shown that it successfully allows the difficult separation of Co^II from Ni^II , here studied at 24 and 50 °C.

Keywords: hydrometallurgy; ionic liquids; metal recycling; noble metals; sustainable chemistry.

Publication types

Research Support, Non-U.S. Gov't