A New Triketone Ligand for Extraction of Lithium from Brines**

Barbara R. Evans; Ilja Popovs; Katherine R. Johnson; Jeffrey D. Einkauf; Bruce A. Moyer; Mariappan Parans Paranthaman

doi:10.1002/cssc.202401600

A New Triketone Ligand for Extraction of Lithium from Brines**

Barbara R. Evans, Ilja Popovs, Katherine R. Johnson, Jeffrey D. Einkauf, Bruce A. Moyer, Mariappan Parans Paranthaman

Research output: Contribution to journal › Article › peer-review

Abstract

Recovery of lithium from brines by liquid-liquid solvent extraction (LLE) with diketones and synergistic co-ligands has been investigated for decades, but industrial application has been limited. In pursuit of a ligand with improved properties, a series of ketonamides with beta-carbonyl groups were designed, synthesized, and tested in extraction of lithium from sulfate and carbonate simulants of clay mineral tailing leachates. The best performing ligand, a novel tricarbonyl amide, was characterized for lithium extraction with and without four synergistic co-ligands. The tricarbonyl amide combined with the synergistic co-ligand Cyanex-923 was absorbed on a resin support. The ligand-modified resin was tested for performance in extraction of dilute brine simulants and up to 60 % recovery of lithium was achieved.

Original language	English
Journal	ChemSusChem
DOIs	https://doi.org/10.1002/cssc.202401600
State	Accepted/In press - 2024

Funding

This work was supported by the Critical Materials Innovation Hub funded by the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Materials and Manufacturing Technologies Office. Work at Oak Ridge National Laboratory was conducted under DOE contract DE\u2010AC05\u201000OR22725. This manuscript has been authored by UT\u2010Battelle LLC under Contract No. DE\u2010AC05\u201000OR22725 with the US Department of Energy. Single\u2010crystal XRD by JDE was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the US Government retains a non\u2010exclusive, paid\u2010up, irrevocable, world\u2010wide license to publish or reproduce the published form of this manuscript or allow others to do so, for US Government purposes. The DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan.

Funders	Funder number
Basic Energy Sciences
Office of Energy Efficiency and Renewable Energy
Office of Science
Chemical Sciences, Geosciences, and Biosciences Division
Advanced Materials and Manufacturing Technologies Office
U.S. Department of Energy	DE‐AC05‐00OR22725
U.S. Department of Energy

Keywords

Brines
Co-ligands
Lithium
Solvent extraction
β-Diketone

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10.1002/cssc.202401600

Cite this

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abstract = "Recovery of lithium from brines by liquid-liquid solvent extraction (LLE) with diketones and synergistic co-ligands has been investigated for decades, but industrial application has been limited. In pursuit of a ligand with improved properties, a series of ketonamides with beta-carbonyl groups were designed, synthesized, and tested in extraction of lithium from sulfate and carbonate simulants of clay mineral tailing leachates. The best performing ligand, a novel tricarbonyl amide, was characterized for lithium extraction with and without four synergistic co-ligands. The tricarbonyl amide combined with the synergistic co-ligand Cyanex-923 was absorbed on a resin support. The ligand-modified resin was tested for performance in extraction of dilute brine simulants and up to 60 % recovery of lithium was achieved.",

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author = "Evans, {Barbara R.} and Ilja Popovs and Johnson, {Katherine R.} and Einkauf, {Jeffrey D.} and Moyer, {Bruce A.} and Paranthaman, {Mariappan Parans}",

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T1 - A New Triketone Ligand for Extraction of Lithium from Brines**

AU - Evans, Barbara R.

AU - Popovs, Ilja

AU - Johnson, Katherine R.

AU - Einkauf, Jeffrey D.

AU - Moyer, Bruce A.

AU - Paranthaman, Mariappan Parans

PY - 2024

Y1 - 2024

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AB - Recovery of lithium from brines by liquid-liquid solvent extraction (LLE) with diketones and synergistic co-ligands has been investigated for decades, but industrial application has been limited. In pursuit of a ligand with improved properties, a series of ketonamides with beta-carbonyl groups were designed, synthesized, and tested in extraction of lithium from sulfate and carbonate simulants of clay mineral tailing leachates. The best performing ligand, a novel tricarbonyl amide, was characterized for lithium extraction with and without four synergistic co-ligands. The tricarbonyl amide combined with the synergistic co-ligand Cyanex-923 was absorbed on a resin support. The ligand-modified resin was tested for performance in extraction of dilute brine simulants and up to 60 % recovery of lithium was achieved.

KW - Brines

KW - Co-ligands

KW - Lithium

KW - Solvent extraction

KW - β-Diketone

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A New Triketone Ligand for Extraction of Lithium from Brines**

Abstract

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Keywords

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