Homogeneous Liquid–Liquid Extraction of Metal Ions with a Functionalized Ionic Liquid | Zendy

Tom Vander Hoogerstraete | Zendy; Bieke Onghena | Zendy; Koen Binnemans | Zendy

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Homogeneous Liquid–Liquid Extraction of Metal Ions with a Functionalized Ionic Liquid

Author(s) -

Tom Vander Hoogerstraete,

Bieke Onghena,

Koen Binnemans

Publication year - 2013

Publication title -

the journal of physical chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.563

H-Index - 203

ISSN - 1948-7185

DOI - 10.1021/jz4005366

Subject(s) - ionic liquid , extraction (chemistry) , indium , aqueous solution , chemistry , metal ions in aqueous solution , inorganic chemistry , gallium , liquid–liquid extraction , ion , imide , aqueous two phase system , solvent , materials science , organic chemistry , catalysis

Binary mixtures of the ionic liquid betainium bis(trifluoromethylsulfonyl)imide and water show an upper critical solution temperature. This solvent system has been used to extract metal ions by phase-transition extraction, using zwitterionic betaine as extractant. The system is efficient for the extraction of trivalent rare-earth, indium and gallium ions. This new type of metal extraction system avoids problems associated with the use of viscous ionic liquids, namely, the difficulty of intense mixing of the aqueous and ionic liquid phases by stirring.

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