Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 492, Issue -, Pages 136-145Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2016.12.063
Keywords
Micellar catalysis; Water; Surfactants; Ionic liquids; Aerobic oxidation; Palladium
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Funding
- Austrian Science Fund (FWF) [P25504 N28]
- Austrian Science Fund (FWF) [P25504] Funding Source: Austrian Science Fund (FWF)
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We present design and synthesis of surface-active ionic liquids for the application in micellar catalysis. A series of 1-methyl-3-dodecylimidazolium based ionic liquids with variable core structures including dicationic and zwitterionic ones was synthesized and characterized. These surface-active ionic liquids where applied in the aerobic oxidation of aliphatic alcohols to carbonyl compounds. A strong dependence on the ionic liquid concentration and structure was identified, which is in accordance with the concepts of micellar catalysis. Optimum conditions for the oxidation of 1-octanol could be identified, and the use of surface-active ionic liquids strongly improved the reaction performance compared to pure water. Under optimized conditions, it was possible to isolate up to 75% of octanoic acid using only small amounts of surface-active ionic liquid in a 0.05 mM solution in water without further ligands. (C) 2016 Published by Elsevier Inc.
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