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MODIFIED POROUS HYPERCROSSLINKED POLYMERS FOR CO2 CAPTURE AND CONVERSION
MODIFIED POROUS HYPERCROSSLINKED POLYMERS FOR CO2 CAPTURE AND CONVERSION
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机译:改性的多孔超交联聚合物,用于二氧化碳捕获和转化
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摘要
The present disclosure describes a process for making a hyperporous material for capture and conversion of carbon dioxide. The process comprises the steps a first self-polymerisation of benzyl halides via Friedel-Crafts reaction. In the second step the obtained hypercrosslinked polymer is further coupled with an amine or heterocyclic compound having at least one nitrogen ring atom. The invention also relates to the material obtained to the process and its use in catalytic reactions, for instance the conversion of epoxides to carbonates. Salt-modified porous hypercrosslinked polymers obtained according to the invention show a high BET surface (BET surface area up to 926 m2/g) combined with strong CO2 capture capacities (14.5 wt %). The nitrogen compound functionalized hypercrosslinked polymer catalyst shows improved conversion rates compared to known functionalized polystyrene materials and an excellent recyclability. A new type of imidazolium salt modified polymers shows especially high capture and conversion abilities. Carbonates can be produced in high yields according to the inventive used of the obtained polymers.
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机译:本公开内容描述了制备用于捕获和转化二氧化碳的超孔材料的方法。该方法包括以下步骤:通过Friedel-Crafts反应使苄基卤化物首先自聚合。在第二步骤中,将获得的超交联聚合物进一步与具有至少一个氮环原子的胺或杂环化合物偶联。本发明还涉及通过该方法获得的材料及其在催化反应中的用途,例如环氧化物转化为碳酸盐。根据本发明获得的盐改性的多孔超交联聚合物表现出高的BET表面积(BET表面积高达926 m 2 Sup> / g)以及强大的CO 2 Sub>捕获能力( 14.5重量%)。与已知的官能化聚苯乙烯材料相比,含氮化合物官能化的超交联聚合物催化剂显示出更高的转化率和出色的可回收性。新型咪唑鎓盐改性的聚合物显示出特别高的捕获和转化能力。根据所获得的聚合物的本发明,可以高产率生产碳酸酯。
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