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Metal‐free and Scalable Synthesis of Porous Hyper‐cross‐linked Polymers: Towards Applications in Liquid‐Phase Adsorption
Author(s) -
Schute Kai,
Rose Marcus
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201500829
Subject(s) - adsorption , porosity , polymer , chemical engineering , metal , stoichiometry , lewis acids and bases , phase (matter) , selectivity , chemistry , porous medium , materials science , metal organic framework , organic chemistry , inorganic chemistry , catalysis , engineering
Abstract A metal‐free route for the synthesis of hyper‐cross‐linked polymers (HCP) based on Brønsted acids such as trifluoromethanesulfonic acid as well as H 2 SO 4 is reported. It is an improved method compared to conventional synthesis strategies that use stoichiometric amounts of metal‐based Lewis acids such as FeCl 3 . The resulting high‐performance adsorbents exhibit a permanent porosity with high specific surface areas up to 1842 m 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.