Dicationic and tricationic ionicliquids, synthesised by proton transfer from sulfuric acid and corresponding di- and triamines, were characterised and used as Brønstedacidiccatalysts in biodiesel production. It has been demonstrated that the new ionicliquids are less expensive than those based on monoamines (even on triethylamine) and are highly acidic. Their performance in a model catalytic esterification
Ionic liquids and acid gas capture: water and oxygen as confounding factors
作者:Luke J. Murphy、Alex M. McPherson、Katherine N. Robertson、Jason A. C. Clyburne
DOI:10.1039/c1cc16008g
日期:——
Amines dissolved in ionic liquids react rapidly with SO2 to produce new materials. Compounds related to the stepwise conversion of SO2 to sulfite and sulfate salts have been isolated. Trapping SO2 in the form of the sulfite anion does not change the oxidation state of sulfur and should maintain the reversibility of the capture system.
Ionic-Liquid Salt-Mediated Synthesis of 4′-(Pyridyl)-terpyridines
作者:Sumit V. Jadhav、Pravin G. Ingole、Hari C. Bajaj
DOI:10.1080/00397910903046838
日期:2010.3.19
One-pot reactions to produce isomeric 4'-(pyridyl) 2,2':6',2''-terpyridine under moderate conditions are described using imidazolium-based ionic liquid and quaternary ammonium-based molten salts as solvent media. The use of eutectic molten salts as a reaction media proved effective in sequential aldol and Michael addition reactions, leading to substituted terpyridines. The desired product was obtained in reasonable yield via a simple, one-pot reaction.