Solid-state post-combustion CO2 sorbents have certain advantages over traditional aqueous amine systems, including reduced regeneration energy since vaporization of liquid water is avoided, tunable pore morphology, and greater chemical variability. We report here an ordered mesoporous nitrogen-doped carbon made by the co-assembly of a modified-pyrrole and triblock copolymer through a soft-templating method, which is facile, economic, and fast compared to the hard-template approach. A high surface area mesoporous carbon was achieved, which is comparable to the silica counterpart. This porous carbon, with a Brunauer-Emmett-Teller (BET) specific surface area of 804.5 m~2 g~(-1), exhibits large CO2 capacities (298 K) of 1.0 and 3.1 mmol g~(-1) at 0.1 and 1 bar, respectively, and excellent CO2/N2 selectivity of 51.4. The porous carbon can be fully regenerated solely by inert gas purging without heating. It is stable for multiple adsorption/desorption cycles without reduction in CO2 capacity. These desirable properties render the nitrogen-doped hierarchical porous carbon a promising material for post-combustion CO2 capture.
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机译：固态燃烧后CO2吸附剂具有与传统的胺制品中的某些优点，包括降低的再生能量，因为避免了液态水的蒸发，可调谐孔形态，以及更高的化学变异性。在此报道通过软模板方法通过软模板方法进行改性吡咯和三嵌段共聚物的共同组装制备的有序的介孔氮掺杂碳，这与硬模板方法相比，经济和快速。实现了高表面积介孔碳，其与二氧化硅对应物相当。这种多孔碳，带有Brunauer-Emmett-keter（Bet）比表面积为804.5 m〜2g〜（-1），在0.1时显示出1.0和3.1mmol g〜（-1）的大二氧化碳容量（298k）分别为1巴，优异的CO 2 / N 2选择性为51.4。可以仅通过在不加热的情况下完全通过惰性气体吹扫完全再生。对于多种吸附/解吸循环，它是稳定的，而不会降低二氧化碳容量。这些理想的性能使氮气掺杂的分层多孔碳成为燃烧后CO2捕获的有希望的材料。
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