Model catalysts are specifically designed to address the complexity issue in catalysis. Real catalysts are very complex, which makes them a nightmare for scientists seeking to understand how these systems work. Typically, only a small part of the catalyst’s compositional and structural spectrum is relevant for the catalytic process. Consequently, much of the spectral and structural information stems from irrelevant parts of the catalyst, making the identification of relevant components a non-trivial and error-prone task. [more]