We review the possibilities in using model systems to explore heterogeneous catalytic reactions under ultrahigh-vacuum and in-situ conditions. We discuss metal nano particles deposited on thin oxide films allowing to study hydrogenation and dehydrogenation reactions, while applying a variety of surface sensitive techniques. A second class of systems, where homogeneous catalysts were heterogenized, has been studied under in-situ conditions using ESR spectroscopy.
展开▼
