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In-Situ Analysis

© Uni bremen, Jürgen UlpstGasphasenreaktionen mit NMR-Methoden

Investigation of heterogeneously catalyzed gas phase reactions by applying NMR-Methods

Heterogeneously catalyzed gas phase reactions are determined by both, surface activity of the catalyst and heat and mass transfer characteristics of its macroscopic structure. To obtain a description of this interaction, modeling and simulation in combination with its validation by in-situ measurements of local gas composition could pave the way for locally resolving models. For this purpose, we are developing nuclear magnetic resonance spectroscopic imaging (MRSI) methods that are suitable for non-invasively observing composition of gases within optically closed reaction systems. It is intended to obtain spatial and temporal distributions of in-situ measured gas compositions even under gas flow and reaction conditions. The findings are expected to be applied for investigating gas phase reactions catalyzed by structured catalysts and to foster the design of reaction specific tailored catalyst beds.