Three kinds of activated coke powders (ACPs) were prepared from different coal by a one‐step rapid pyrolysis activation method. Detailed pore structure and surface characteristics of the ACPs were characterized by BET specific surface area test, scanning electron microscope (SEM), and Fourier transform infrared spectrometer (FTIR). Adsorption capacity of ethyl acetate, benzene, and p‐xylene onto the ACPs was tested. Results demonstrated that the ACPs had well‐developed pore structures, with considerable specific surface area and pore volume. Volatile contents in the feed coal had promotion effect on the fast formation and development of the pore structure. Shengli lignite (SLC) showed the largest specific surface area and pore volume, which reached 351.07 m²/g and 0.1698 m³/g, separately. Surfaces of ACPs were rich of functional groups as carboxyl, lactone, phenolic hydroxyl (or ether), and carbonyl, the types of which kept relatively constant regardless of the change of the feed coal. ACPs presented good VOCs adsorption performance. With the most micropore structures, SLC sample presented the best adsorption capacity for ethyl acetate, benzene, and p‐xylene, which is 222.23, 149.87, and 217.63 mg/g, respectively. All ACPs presented preferential VOC adsorption order of ethyl acetate > p‐xylene > benzene, which suggested that ACPs presented favorable adsorption ability to VOC species of polar and large molecules.

中文翻译：

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一步法快速热解活化法得到活性炭粉的孔结构和VOCs吸附特性

通过一步快速热解活化方法，从不同的煤中制备出三种活性炭粉（ACP）。通过BET比表面积测试，扫描电子显微镜（SEM）和傅立叶变换红外光谱仪（FTIR）对ACP的详细孔结构和表面特征进行了表征。测试了乙酸乙酯，苯和对二甲苯在ACP上的吸附能力。结果表明，ACP具有发达的孔结构，具有相当的比表面积和孔体积。原料煤中的挥发性成分对孔隙结构的快速形成和发展具有促进作用。胜利褐煤（SLC）的比表面积和孔容最大，分别达到351.07 m ² / g和0.1698 m³ / g，分别。ACP的表面含有丰富的官能团，例如羧基，内酯，酚羟基（或醚）和羰基，无论进料煤的变化如何，它们的类型都保持相对恒定。ACP具有良好的VOC吸附性能。具有最多的微孔结构，SLC样品对乙酸乙酯，苯和对二甲苯的吸附能力最佳，分别为222.23、149.87和217.63 mg / g。所有ACP均表现出乙酸乙酯>对二甲苯>苯的优先VOC吸附顺序，这表明ACP对极性和大分子的VOC种类具有良好的吸附能力。