Separation of Aromatic and Organic Nitrogen Compounds with Supported Ionic Liquid Membranes pp. 479-492
Authors: (Michiaki Matsumoto, Department of Chemical Engineering and Materials Science, Doshisha University, Kyotanabe, Japan)
Abstract: Aromatic hydrocarbons and organic nitrogen compounds were separated with supported liquid membranes using ionic liquids, based on 1-alkyl-3-methylimidazorium and quaternary ammonium salts. The aromatic hydrocarbons and organic nitrogen compounds selectively permeated the membranes. Liquid membranes that used more hydrophilic ionic liquids yielded higher selectivity. The ionic liquids were retained in
membrane pores after ten times repeated experiments. Supported liquid membranes based on ionic liquids were applied to separation of aromatic hydrocarbons, organic nitrogen and sulfur compounds from model fuels. These compounds were successfully permeated through the membranes. Supported ionic liquid membranes were found to be promising technique for separating polar organic compounds.