Abstract
The preparation of nanoporous melamine‐formaldehyde resins by aqueous dispersion polycondensation under oxalic acid catalysis is presented. Multimodal porosity, including micro‐, meso‐, and macropores, is achieved by an interplay of hard‐templating of 12 nm sized silica nanoparticles and phase separation processes, resulting in materials with high potential for adsorption applications, as exemplified by investigation of the CO2 adsorption properties. The materials are characterized by a set of methods, including electron microscopy, gas adsorption, and small‐angle X‐ray scattering. The influence of the synthesis conditions (e.g. stirring speed) on the properties of the obtained products is also discussed and a suggestion is made for the formation mechanism of the materials. Finally, the properties are compared to materials obtained by bulk polycondensation.
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