Product gas evolution above planar microstructured model catalysts - A combined scanning mass spectrometry, Monte Carlo, and computational fluid dynamics study

M. Roos, J. Bansmann, D. Zhang, O. Deutschmann, and R. J. Behm




The transport and distribution of reaction products above catalytically active Pt micro-structures was studied by spatially resolved scanning mass spectrometry in combination with Monte Carlo simulation and fluid dynamics calculations, using the oxidation of CO as test reaction. Measurement and reaction conditions are defined where effects induced by the capillary tip can be neglected ('minimal invasive measurements') and provide a basis for the evaluation of catalyst activities on microstructured model systems.