Electron spectroscopy has provided much of our current knowledge on the chemical and physical processes involved in the complex interactions between a solid surface and its surroundings. Such processes are important for surface catalysis and corrosion, for example.
As the surface state depends strongly on its environment, it is vital that such studies are performed under realistic in situ and/or operando conditions. Recently, HP-XPS has been introduced as a powerful method to approach such questions due to the sensitivity to the chemical state of the substrate as well as of the adsorbates. Whereas it is not possible to perform electron spectroscopy at realistic pressures for industrial catalytic reactions, the maximum pressure of 25 mbar is in most cases sufficient for modeling real reaction conditions.
The SPECIES instrument at MAX-Lab is a key infrastructure for this project. The HIPPIE beam line is being designed for the future MAX IV ring.
Project leaders: Dr Jan Knudsen and Professor Joachim Schnadt.