<p>Plasma catalysis is gaining increasing interest for various gas conversion applications, such as CO(2)conversion into value-added chemicals and fuels, CH(4)activation into hydrogen, higher hydrocarbons or oxygenates, and NH(3)synthesis. Other applications are already more established, suchas for air pollution control, e.g. volatile organic compound remediation, particulate matter and NO(x)removal. In addition, plasma is also very promising for catalyst synthesis and treatment. Plasma catalysis clearly has benefits over 'conventional' catalysis, as outlined in the Introduction. However, a better insight into the underlying physical and chemical processes is crucial. The key challenge is to design cost-effective, highly active and stable catalysts tailored to the plasma environment. Therefore, insight from thermal catalysis as well as electro- and photocatalysis is crucial.</p>
