Regensburg 2010 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
O: Fachverband Oberflächenphysik
O 60: Poster Session III (Methods: Atomic and electronic structure; Methods: electronic structure theory; Methods: Molecular simulations and statistical mechanics; Methods: Sanning probe techniques; Methods: other (experimental); Methods: other (theory) )
O 60.32: Poster
Wednesday, March 24, 2010, 17:45–20:30, Poster B2
Molecular trapping and scattering at ionic liquid surfaces — •Andre Dorsch, Matthias Schöppke, and Reinhard Denecke — Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstr. 2, 04103 Leipzig, Germany
Gas uptake in ionic liquids is an important process for the technological use of such substances [1,2]. Using a supersonic molecular beam setup and a moveable quadrupole mass spectrometer, the interaction of CO2 and N2 with surfaces of imidazolium-based ionic liquids have been studied. Employing angle-resolved measurements, trapping and inelastic scattering events can be determined. Parameters like the kinetic energy of the impinging molecules, which influence the behaviour, are systematically varied. From the results residence times of gases in ionic liquids are derived.
[1] J. F. Brennecke, E. J. Maginn, Purification of Gas with Liquid Ionic Compounds. US Patent 6,579,343 (2003).
[2] A. Yokozeki, M. B. Shiflett, Appl. Energy 84, 351 (2007).