Abstract

The porous structure of activated carbons (ACs) formed by fossil coals of different ranks upon alkaline activation with thermal shock (KOH, 800°C) was studied. It was established that the specific surface area of ACs decreased from 2012 to 818 m²/g, the pore volume decreased from 1.088 to 0.269 cm³/g, and the fraction of micropores linearly increased from 0.64 to 0.92 as the C^daf of the test samples increased from 70.4 to 95.6%. It was shown that an increase in coal rank was responsible for the transition from a micro–mesoporous material to a nanoporous AC.

中文翻译：

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热冲击对碱活化后化石煤多孔结构的形成

摘要

研究了不同等级的化石煤在热冲击（KOH，800℃）下碱活化后形成的活性炭（AC）的多孔结构。已经确定，AC的比表面积从2012年降低到818 m ² / g，孔体积从1.088降低到0.269 cm ³ / g，并且微孔的比例随着C ^daf的增加从0.64线性增加到0.92 。测试样本从70.4增加到95.6％。研究表明，煤级的提高是由微介孔材料向纳米多孔AC过渡的原因。