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Reducing the Competition: A Dual-Purpose Ionic Liquid for the Extraction of Gallium from Iron Chloride Solutions.

ABSTRACT: The separation of gallium from iron by solvent extraction from chloride media is challenging because the anionic chloridometalates, FeCl4- and GaCl4-, display similar chemical properties. However, we report here that the selective separation of gallium from iron in HCl solution can be achieved using the dual-purpose ionic liquid methyltrioctylammonium iodide in a solvent extraction process. In this case, the reduction of Fe3+ to Fe2+ by the iodide counterion was found to inhibit Fe transport, facilitating quantitative Ga extraction by the ionic liquid with minimal Fe extraction from 2 M HCl.

SUBMITTER: M M Kinsman L

PROVIDER: S-EPMC7570643 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Reducing the Competition: A Dual-Purpose Ionic Liquid for the Extraction of Gallium from Iron Chloride Solutions.

M M Kinsman Luke L A Morrison Carole C T Ngwenya Bryne B B Love Jason J

Molecules (Basel, Switzerland) 20200904 18

The separation of gallium from iron by solvent extraction from chloride media is challenging because the anionic chloridometalates, FeCl4- and GaCl4-, display similar chemical properties. However, we report here that the selective separation of gallium from iron in HCl solution can be achieved using the dual-purpose ionic liquid methyltrioctylammonium iodide in a solvent extraction process. In this case, the reduction of Fe3+ to Fe2+</s ...[more]

PMID: 32899701

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