Controlling the aqueous miscibility of ionic liquids: aqueous biphasic systems of water-miscible ionic liquids and water-structuring salts for recycle, metathesis, and separations

Keith E Gutowski; Grant A Broker; Heather D Willauer; Jonathan G Huddleston; Richard P Swatloski; John D Holbrey; Robin D Rogers

doi:10.1021/ja0351802

Controlling the aqueous miscibility of ionic liquids: aqueous biphasic systems of water-miscible ionic liquids and water-structuring salts for recycle, metathesis, and separations

J Am Chem Soc. 2003 Jun 4;125(22):6632-3. doi: 10.1021/ja0351802.

Authors

Keith E Gutowski¹, Grant A Broker, Heather D Willauer, Jonathan G Huddleston, Richard P Swatloski, John D Holbrey, Robin D Rogers

Affiliation

¹ Center for Green Manufacturing and Department of Chemistry, The University of Alabama, Tuscaloosa, AL 35487, USA.

PMID: 12769563
DOI: 10.1021/ja0351802

Abstract

Hydrophilic ionic liquids can be salted-out and concentrated from aqueous solution upon addition of kosmotropic salts forming aqueous biphasic systems as illustrated by the phase behavior of mixtures of 1-butyl-3-methylimidazolium chloride ([C4mim]Cl) and K3PO4.