Regensburg 2016 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 26: Poster: Charged Soft Matter, Polyelectrolytes, Ionic Liquids
CPP 26.7: Poster
Dienstag, 8. März 2016, 18:15–21:00, Poster B2
Surface Segregation of Alkanes in Ionic Liquids — •Julian Mars1,2, Henning Weiss2, Hailong Li2, Bridget Murphy3, and Markus Mezger1,2 — 1Johannes Gutenberg-Universität Mainz, Germany — 2Max-Planck-Institut für Polymerforschung, Mainz, Germany — 3Christian-Albrechts-Universität zu Kiel, Germany
Ionic Liquids (ILs) are promising candidates in a variety of applications such as heterogeneous catalysis. In the SILP (Supported Ionic Liquid Phase) catalysis the chemical reaction takes place in a thin IL film, wetting a solid support material with high surface area. Recently, it has been proposed that the observed performance degradation is related to aggregation of side products at the IL/gas interface, forming diffusion barriers for educts and products. As a model system, we studied the near surface structure of an alkane containing IL by x-ray reflectivity. Analysis of the experimental data revealed surface segregation of the alkanes, affecting the interfacial ion profile.