The goal of Project Area C relates to the interconnection of the basic understanding developed in project areas A and B with the behavior of real catalytic converters. Important aspects are synthesis and design of real hierarchically-structured catalyst systems, i.e. real reactors, the understanding of all structures (nanoparticles, washcoats, support structure, integral system) and their interaction under realistic transient conditions (continuous variations of the feed with respect to composition, temperature and mass flow).