Research area 1 focuses on the reduction of iron oxide in order to store electric energy obtained from renewable sources. Reduction is investigated in two different approaches: electrochemical and thermochemical reduction.

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Electrochemical reduction

The electrochemical reduction of iron oxides dissolved in ionic liquids is investigated regarding the reaction kinetics and thermodynamics in half-cells. Phase transitions during dissolving iron and its reductive separation are studied in full cells and a Taylor-Couette test bench. Results are used to develop reactor concepts.

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Thermochemical reduction

The sequence of investigations of thermal reduction processes ranges from heterogeneous reaction kinetics to flow reactors, in which chemical reactions couple with physical transport processes, to fluidized beds.


  • Define process conditions and range of parameter values
  • Setup of a rough kinetic and thermodynamic database from parameter studies
  • Setup of a detailed kinetic and thermodynamic database from parameter studies
  • Analyze coupled transport and thermodynamic reduction processes
  • Complete all steps along the process chain for the thermochemical and electrochemical reduction

Research area coordination

  Name Contact
Prof. Dr. Ulrike Kramm
+49 6151 16-20356
Prof. Dr. Olaf Deutschmann
+49 721 608-43064