Size Selective Ligand Tug of War Strategy to Separate Rare Earth Elements

Katherine R. Johnson; Darren M. Driscoll; Joshua T. Damron; Alexander S. Ivanov; Santa Jansone-Popova

doi:10.1021/jacsau.2c00671

Size Selective Ligand Tug of War Strategy to Separate Rare Earth Elements

Katherine R. Johnson, Darren M. Driscoll, Joshua T. Damron, Alexander S. Ivanov, Santa Jansone-Popova

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

27 Scopus citations

Abstract

Separating rare earth elements is a daunting task due to their similar properties. We report a “tug of war” strategy that employs a lipophilic and hydrophilic ligand with contrasting selectivity, resulting in a magnified separation of target rare earth elements. Specifically, a novel water-soluble bis-lactam-1,10-phenanthroline with an affinity for light lanthanides is coupled with oil-soluble diglycolamide that selectively binds heavy lanthanides. This two-ligand strategy yields a quantitative separation of the lightest (e.g., La-Nd) and heaviest (e.g., Ho-Lu) lanthanides, enabling efficient separation of neighboring lanthanides in-between (e.g., Sm-Dy).

Original language	English
Pages (from-to)	584-591
Number of pages	8
Journal	JACS Au
Volume	3
Issue number	2
DOIs	https://doi.org/10.1021/jacsau.2c00671
State	Published - Feb 27 2023

Funding

The authors thank Dr. Subhamay Pramanik for help with the EQNMR software and Dr. Nikki Thiele and Dr. Ilja Popovs for helpful discussions. Portions of this research were carried out at National Synchrotron Light Source II (NIST beamline 6-BM), a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-SC0012704. Access to the Xeuss 3 SAXS/WAXS instrument was obtained via the ORNL instrumentation pool. The Xeuss 3 instrument was funded via the ORNL LDRD program. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The publisher acknowledges the U.S. government license to provide public access under the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Separation Science program, and Materials Chemistry program under award no DE-SC00ERKCG21.

Funders	Funder number
ORNL LDRD	DE-AC05-00OR22725
Separation Science program	DE-SC00ERKCG21
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Brookhaven National Laboratory	DE-SC0012704

Keywords

BLPhen
diglycolamide
lanthanide
rare earth element
separation

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10.1021/jacsau.2c00671

Cite this

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abstract = "Separating rare earth elements is a daunting task due to their similar properties. We report a “tug of war” strategy that employs a lipophilic and hydrophilic ligand with contrasting selectivity, resulting in a magnified separation of target rare earth elements. Specifically, a novel water-soluble bis-lactam-1,10-phenanthroline with an affinity for light lanthanides is coupled with oil-soluble diglycolamide that selectively binds heavy lanthanides. This two-ligand strategy yields a quantitative separation of the lightest (e.g., La-Nd) and heaviest (e.g., Ho-Lu) lanthanides, enabling efficient separation of neighboring lanthanides in-between (e.g., Sm-Dy).",

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AU - Jansone-Popova, Santa

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Size Selective Ligand Tug of War Strategy to Separate Rare Earth Elements

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Keywords

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