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Graded catalyst supports

Depending on their porosity and pore density, monolithic sponges, also known as open-cell foams, cover a wide range of surface areas, permeabilities, and heat and mass transport properties. Consequently, they are attractive catalyst supports for exothermic processes that require substantial heat management to control possible hot spots and reduce catalyst stress.


Actual examples of such exothermic processes in the field of Chemical Energy Storage are the Sabatier process, the Fischer-Tropsch process, and the synthesis of methanol from CO2. In this project we apply numerical and experimental techniques to develop graded monolithic sponges with spatially distributed porosity and pore density to resolve the conflicting relations between large surface areas (small pores), high permeabilities (large pores, high porosity), and good heat transport properties (low porosity), and thus lead to optimal process performance in terms of yield, pressure drop, and hot spot control.




Lars Kiewedt