A series of novel silane-based hyper-cross-linked porous polymers was prepared through the Friedel–Crafts alkylation reaction of dimethyldiphenylsilane as the monomer and formaldehyde dimethyl acetal as the external cross-linker. The structures of the polymers were confirmed by FTIR and solid-state cross-polarization magic-angle spinning 13C NMR. We investigated the porous polymers with different ratios of dimethyldiphenylsilane to formaldehyde dimethyl acetal. Porous properties were determined by nitrogen, carbon dioxide and hydrogen adsorptions. The results revealed that the porous materials possessed surface areas from 742 to 1205 m2 g−1 with the increasing amount of formaldehyde dimethyl acetal. Moreover, this material exhibited high thermal stabilities, good CO2 capture, and H2 storage capacities. The material was also used as adsorbent for organic dyes in aqueous solution and showed an excellent adsorption capacity of 952 mg g−1 for Congo red dye. These results suggest that the silane-based hyper-cross-linked porous polymers are promising materials for CO2 capture, H2 storage, and water treatment.

中文翻译：

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硅烷基超交联多孔聚合物及其在储气和水处理中的应用

以二甲基二苯基硅烷为单体，甲醛二甲基乙缩醛为外部交联剂，通过Friedel-Crafts烷基化反应制备了一系列新型硅烷基超交联多孔聚合物。聚合物的结构通过 FTIR 和固态交叉极化魔角旋转 13C 核磁共振证实。我们研究了具有不同比例的二甲基二苯基硅烷与甲醛二甲基乙缩醛的多孔聚合物。多孔性由氮气、二氧化碳和氢气吸附确定。结果表明，随着甲醛二甲缩醛用量的增加，多孔材料的表面积从 742 到 1205 m2 g-1。此外，这种材料表现出高热稳定性、良好的 CO2 捕获和 H2 存储能力。该材料还用作水溶液中有机染料的吸附剂，对刚果红染料显示出 952 mg g-1 的优异吸附能力。这些结果表明，基于硅烷的超交联多孔聚合物是用于 CO2 捕获、H2 储存和水处理的有前途的材料。