Abstract The carbonaceous precursor was obtained via pyrolysis of commercial aramid polymer (Kevlar). Additionally the precursor was activated at 1000°C in CO2 atmosphere for different times. Obtained materials were characterised by BET; XPS; SEM and optical microscopy. The sorption capacities were determined by temperature swing adsorption performed in TGA apparatus for CO2 and C2H4 gases. The obtained materials exhibit high difference in sorption of these gases i.e. 1.5 and 2.8 mmol/g @30°C respectively and high SSA ~1600 m2/g what can be applied in separation applications. The highest uptakes were 1.8 and 3.1 mmol/g @30°C respectively. It was found that the presence of oxygen and nitrogen functional groups enhances C2H4/CO2 uptake ratio.

中文翻译：

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用于 CO2 和 C2H4 吸附的商业 Kevlar 衍生活性炭

摘要 通过商业芳纶聚合物（Kevlar）的热解获得碳质前体。此外，前体在 1000°C 的 CO2 气氛中活化不同的时间。获得的材料通过 BET 进行表征；XPS；SEM和光学显微镜。吸附容量通过在 TGA 装置中对 CO2 和 C2H4 气体进行的变温吸附来确定。所获得的材料在这些气体的吸附方面表现出很大的差异，即分别在 30°C 下为 1.5 和 2.8 mmol/g，并且可用于分离应用的高 SSA ~1600 m2/g。最高摄取量分别为 1.8 和 3.1 mmol/g @30°C。发现氧和氮官能团的存在提高了 C2H4/CO2 的吸收率。