Cyanopropyl-Cation Ionic Liquids as High Polar Stationary Phases for Capillary Gas Chromatography
Protection of Metals and Physical Chemistry of Surfaces
, E-ISSN: 2070-206X
||highly polar phases; ionic liquids; selectivity; thermal stability
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Novosibirsk State University, Novosibirsk, 630090, Russia
Ministry of Science and Higher Education of the Russian Federation
Abstract: The present work was devoted to the investigation of highly polar capillary columns with stationary phases based on ionic liquids (IL) with cyanopropyl-containing cations. Five imidazole and quinolinium cyanopropyl-containing ILs have been studied. Their high polarity has been demonstrated. The measured Abraham selectivity has demonstrated an increase in specific types of interaction comparing to noncyanopropyl analogs. High thermal stability up to 300°C has been shown, especially for dicationic ILs. Examples of separation for one-dimensional and two-dimensional gas chromatography have been shown. © 2019, Pleiades Publishing, Ltd.