酚与氯化胆碱形成低共熔溶剂.pdf

Separation and Purification Technology 63 (2008) 710–715 Contents lists available at ScienceDirect Separation and Purification Technology j o u rn al h omepage: www.elsevi er.c om /locate/s eppur Short communication Highly efficient extraction of phenols and aromatic amines into novel ionic liquids incorporating quaternary ammonium cation Vladimir M. Egorov, Svetlana V. Smirnova, Igor V. Pletnev ∗ Department of Chemistry, M.V. Lomonosov Moscow State University, 1/3 Leninskiye gory, 119992 Moscow, Russia a r t i c l e i n f o a b s t r a c t Article history: Two novel hydrophobic room temperature ionic liquids (RTIL) incorporating quaternary ammonium Received 13 May 2008 cations: tetrahexylammonium dihexylsulfosuccinate (THADHSS) and trioctylmethylammonium salicylate Received in revised form 26 June 2008 (TOMAS) have been obtained. The mutual solubility of the both RTILs with water and their Reichardt’s Accepted 28 June 2008 polarity index have been measured. The extraction of aromatic amines and phenols into novel RTILs and two 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amides has been studied. The depen- Keywords: dences of RTIL–water distribution ratio for the studied liquids on the phase volume ratio, the time of phase Ionic liquids contact, pH value of aqueous solutions and the solute concentration have been obtained. In some cases, Liquid–liquid extraction