In 2018, the 12th Otto Roelen Medal will be awarded for an outstanding achievement in catalysis research. DECHEMA and the German Catalysis Society (GeCatS) invite researchers and scientists to propose international candidates who have made significant contributions in this field, especially with regard to application-oriented research. The Otto Roelen Medal is endowed with 5,000 Euro and sponsored by the Oxea Group. Nominations will be evaluated by the Expert Committee of the Otto Roelen Medal. The prize will be awarded in a public ceremony at the Annual Meeting of German Catalysis Researchers in March 2018 in Weimar/Germany.