The institute for Energy and Climate Research, Microstructure and Properties of Materials, of Forschungszentrum Jülich IEK-2 (Institut für Energie- und Klimaforschung,Werkstoffstruktur und -eigenschaften, IEK-2) is our long-term partner in the project HotVeGas on high-temperature coal gasification. We co-operate in the development of the thermodynamic database for the project as well as in the modelling of the viscosity of molten oxides. Furthermore we co-operate in the project VerSi on slagging and fouling in coal fired power plants (see the respective contributions to the 2016 User Meeting).