Membrane Catalysis

Thanks to our process we can insert catalysts into the membrane. Once solidified, the catalytic particle is locked in the polymer matrix.

We achieve such catalysis membranes by dispersing the standard nanoparticles as well as an addition of catalytic active particles into the solution . After coating and solvent evaporation, the solidified polymer fixates the catalytic particle into the polymer matrix. The following acidic bath then removes the nanoparticles to generate the pores, opening up the surface of the catalysts. As these catalytic particles are significantly larger than the nanoparticles, they will be removed by liquid passing through the membrane.

Consequently, we receive a membrane featuring catalytic particles locked in the membrane. If reactants are passing through the pores of the membrane, they have a high probability to encounter such a catalyst, and the reaction can proceed. Since the flow is just one directional, the product will never be fed to the membrane and therefore the catalyst agin. Leading to the advantage, that the product does not dilute the reactant solution.
A second advantage is the relative low catalyst requirement. Since the reactant is forced through a small volume (the pores) with a high density of catalyst, it is much more likely for the reactant to encounter a catalytic surface than it would be in an open system.

Each catalysis membrane is of course a special development for the specific reaction. Therefore, the polymer material as well as the pore sizes are selected specifically to support the performance of the catalysis reaction. Thanks to our materials, we can offer chemically resistant , pressure stable, high flux, hydrophilic and hydrophobic membranes, whatever suits the reaction best.