Schute Kai, Rose Marcus
Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany.
ChemSusChem. 2015 Oct 26;8(20):3419-23. doi: 10.1002/cssc.201500829. Epub 2015 Aug 28.
A metal-free route for the synthesis of hyper-cross-linked polymers (HCP) based on Brønsted acids such as trifluoromethanesulfonic acid as well as H2 SO4 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 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.
报道了一种基于布朗斯特酸（如三氟甲磺酸以及硫酸）合成超交联聚合物（HCP）的无金属路线。与使用化学计量的金属基路易斯酸（如FeCl₃）的传统合成策略相比，这是一种改进的方法。所得的高性能吸附剂具有高达1842 m² g⁻¹的高比表面积的永久孔隙率。HCP合成在多克规模上证明了易于放大。所有化学物理性质均得以保留。水蒸气吸附表明，与传统制备的材料相比，所得材料表现出更明显的疏水性。表面极性的降低提高了生物基平台化学品5-羟甲基糠醛在液相吸附中的选择性。
