Publications by authors named "Lea Hohmann"
We extend the use of our recently developed Near-Ambient Pressure Velocity Map Imaging (NAP-VMI) technique to study the kinetics and dynamics of catalytic reactions in the pressure gap. As an example, we show that NAP-VMI combined with molecular beam surface scattering allows the direct measurement of time- and velocity-resolved kinetics of the scattering and oxidation of CO on the Pd(110) surface with oxygen pressures at the surface up to 1 × 10 mbar, where different metastable surface structures form. Our results show that the c(2 × 4) oxide structure formed at low O pressure is highly active for CO oxidation.
View Article and Find Full Text PDFArticle Synopsis
- A new instrument called NAP-VMI allows researchers to study how molecules scatter off surfaces at near-ambient pressures, bridging the gap between surface science and catalysis.
- The device uses ion optics to create a controlled environment that maintains vacuum while manipulating high-pressure ionization.
- Initial tests show promising results with various chemical reactions, suggesting NAP-VMI could be beneficial for diverse experiments like photoelectron spectroscopy and interactions involving liquids.