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High-throughput screening for discovery of benchtop separations systems for selected rare earth elements

Journal Article · · Communications Chemistry
Abstract

Rare earth (RE) elements (scandium, yttrium, and the lanthanides) are critical for their role in sustainable energy technologies. Problems with their supply chain have motivated research to improve separations methods to recycle these elements from end of life technology. Toward this goal, we report the synthesis and characterization of the ligand tris[(1-hydroxy-2-oxo-1,2-dihydropyridine-3-carboxamido)ethyl]amine, H 3 1·TFA (TFA = trifluoroacetic acid), and complexes 1·RE (RE = La, Nd, Dy). A high-throughput experimentation (HTE) screen was developed to quantitatively determine the precipitation of 1·RE as a function of pH as well as equivalents of H 3 1·TFA. This method rapidly determines optimal conditions for the separation of RE mixtures, while minimizing materials consumption. The HTE-predicted conditions are used to achieve the lab-scale separation of Nd/Dy ( SF Nd/Dy  = 213 ± 34) and La/Nd ( SF La/Nd  = 16.2 ± 0.2) mixtures in acidic aqueous media.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Actinide Science & Technology (CAST); Florida State Univ., Tallahassee, FL (United States); Univ. of Pennsylvania, Philadelphia, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0016568; SC0017259
OSTI ID:
1619732
Alternate ID(s):
OSTI ID: 1767685
Journal Information:
Communications Chemistry, Journal Name: Communications Chemistry Journal Issue: 1 Vol. 3; ISSN 2399-3669
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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