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Facile synthesis of mesoporous melamine-formaldehyde spheres for carbon dioxide capture

机译:介孔三聚氰胺 - 甲醛球体用于二氧化碳捕获的舒适性

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Greenhouse effect and excessive carbon dioxide (CO _(2) ) emissions have caused widespread public concern in recent years. Tremendous efforts have been made towards CO _(2) capture promoting the development of numerous sorbents. In this study, mesoporous melamine-formaldehyde spheres (MMFSs) with high surface area (298 m ~(2) g ~(?1) ), uniform pore sizes (3.0 nm) and high nitrogen content (~45%) have been successfully synthesized using Pluronic F127 and sodium dodecyl sulfonate (SDS) as the templates, glycol as the organic co-solvent, and melamine (M) and paraformaldehyde (PFA) as the precursors, respectively. These MMFSs are highly effective in capturing CO _(2) , with the maximum adsorption capacity of 48.0 mg g ~(?1) at 273 K for CO _(2) . Moreover, the CO _(2) /N _(2) selectivity at 298 K reaches 24.3, which is attributed to the high N content allowing for high binding affinity with CO _(2) and the well-defined mesopores (3.0 nm). This approach suggests a new direction in designing CO _(2) sorbents with excellent selectivity.
机译:温室效应和过量二氧化碳(CO _(2))排放近年来引起了广泛的公众关注。已经向CO _(2)捕获促进了众多吸附剂的发展的巨大努力。在该研究中,具有高表面积(298m〜(2)g〜(α1)),成功的孔径(3.0nm)和高氮含量(〜45%)的中孔三聚氰胺 - 甲醛球体(MMFS)用Pluronic F127和十二烷基磺酸钠(SDS)作为模板,乙二醇作为有机共溶剂,以及三聚氰胺(M)和多聚甲醛(PFA)作为前体。这些MMFS在捕获CO _(2)中非常有效,在273k对于CO _(2)时,最大吸附容量为48.0mg g〜(α1)。此外,298k的CO _(2)/ N _(2)选择性达到24.3,其归因于高N含量,允许与CO _(2)和良好定义的中孔(3.0nm)的高结合亲和力。这种方法表明了在具有优异选择性的CO _(2)吸附剂中的新方向。

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