Potenzial des IR Micro‐Imaging zur In‐situ‐Untersuchung chemischer Reaktionen in nanoporösen Katalysatoren |
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Authors: | Jens Kullmann Christian Küster Tobias Titze Dr Christian Chmelik Prof Dr Roger Gläser Prof Dr Dirk Enke Dr Lutz Prager |
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Affiliation: | 1. Universit?t Leipzig, Institut für Technische Chemie, Linnéstra?e 3, 04103 Leipzig, Deutschland;2. Universit?t Leipzig, Institut für Experimentelle Physik I, Linnéstra?e 5, 04103 Leipzig, Deutschland;3. Leibniz‐Institut für Oberfl?chenmodifizierung e.V., Permoserstra?e 15, 04318 Leipzig, Deutschland |
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Abstract: | The in‐situ study of chemical reactions is an intensively studied research topic. A suitable method for this investigation is the IR micro‐imaging technique, which allows to record space‐ and time‐resolved IR spectra. The preparation of a suitable model system with a 3D pore system for the in‐situ recording of concentration profiles using IR micro‐imaging is described, enabling the space‐ and time‐resolved monitoring of catalytic reactions in nanoporous catalysts for the first time. The model system consists of a nanoporous glass monolith with gas‐tight sealed outer surface, therefore, enabling the recording of concentration profiles of cyclohexane and cyclohexane‐benzene mixtures as a function of time. |
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Keywords: | Diffusionsmessungen Gasdichte Versiegelung IR Micro‐Imaging Konzentrationsprofile Porö se Membranen Concentration profile Diffusion measurement Gas‐tight seal IR micro‐imaging Porous membranes |
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