Journal
CHEMSUSCHEM
Volume 8, Issue 20, Pages 3419-3423Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201500829
Keywords
hydrophobic surface; hydroxymethylfurfural; polymers; liquid-phase adsorption; porous material
Funding
- Excellence Initiative of the German federal government
- Excellence Initiative of the German state government
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A metal-free route for the synthesis of hyper-cross-linked polymers (HCP) based on BrOnsted acids such as trifluoromethanesulfonic acid as well as H2SO4 is reported. It is an improved method compared to conventional synthesis strategies that use stoichiometric amounts of metal-based Lewis acids such as FeCl3. The resulting high-performance adsorbents exhibit a permanent porosity with high specific surface areas up to 1842m(2)g(-1). Easy scalability of the HCP synthesis is proven on the multi-gram scale. All chemo-physical properties are preserved. Water-vapor adsorption shows that the resulting materials exhibit an even more pronounced hydrophobicity compared to the conventionally prepared materials. The reduced surface polarity enhances the selectivity in the liquid-phase adsorption of the biogenic platform chemical 5-hydroxymethylfurfural.
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