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Carbon Dioxide conversion, Catalysis for sustainable processes


Catalytic processes have always existed in nature (e.g. photosynthesis). The utilization of catalytic processes for industrial scale processes (e.g. Ammonia-synthesis) has an enormous impact on us and our environment. In sustainable catalytic processes, resources are generated from renewable or environmentally friendly sources and are catalytically converted. Such obtained products should be as recyclable as possible to generate an in itself closed circuit.

Our work is focused on the CO2-conversion in so called „Power-to-liquid“ or „Power-to-X“ processes. In these cases Hydrogen, e.g. gained through electrolysis using renewable energy, is used. In combination with CO2, e.g. out of industrial processes or ambient air, and suitable catalysts, higher value products can be received (see Fig. 1). Especially methanol, Dimethylether (H3C-O-CH3, DME) and Oxymethylenether (H3C-O-(CH2O)n-CH3, OMEn; n = 3-5) play a key role in our research. Methanol is directly produced out of CO2 and H2 and in-situ converted into DME, in a so called One-Step-DME-synthesis. Additionally novel, energy efficient ways for OMEn-synthesis are developed. OMEn are outstandingly useful as Diesel replacement fuels, as they burn soot free (see video) and are able to grant Euro 6 norm without exhaust modification.



  • Knowledge driven improvement of DME-synthesis
  • One-Step-DME-synthesis
  • Sustainable, energy efficient ways for OMEn synthesis



Sauber tanken - Ingo Krossing forscht zum Dieselersatz Oxymethylenether

Hoffnung für den Dieselmotor: Der Freiburger Chemiker Prof. Dr. Ingo Krossing forscht an dem flüssigen Treibstoff Oxymethylenether. Dieser verbrennt ohne Rückstände – und ist somit eine vielversprechende Alternative zur Elektromobilität.