Abstract This work investigates the deposition precipitation, pore volume impregnation and hydrothermal methods of synthesizing activated carbon monolith supported metal oxide adsorbent (Co3O4/ACM). The hydrothermally synthesized Co3O4 activated carbon monolith adsorbent (Hm-Co3O4/ACM) demonstrate better adsorption capacity (SO2 is 123.1, NOx is 130.2 mg/g) than the adsorbents synthesized by the other methods. The adsorbent displayed high affinity to NOx adsorption where this influence was associated to operation conditions, physical and chemical properties of the adsorbent which were expressed in the plot of the breakthrough curve. Moreover, the surface properties (BET), thermal decomposition (TGA), functional groups (FTIR), chemical composition (XRD) and surface morphology (FESEM) of the adsorbent were investigated. The Langmuir adsorption isotherm fitted the experimental results meanwhile, the thermal regeneration of the adsorbent over two cycles showed an average regeneration efficiency of 94.4% for SO2 and 94.8% for NOx. Finally, the post regeneration characterization analyses were discussed.

中文翻译：

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Co3O4 负载活性炭整料的突破性研究同时去除烟气中的 SO2/NO

摘要 本文研究了沉积沉淀法、孔体积浸渍法和水热法合成活性炭整体负载金属氧化物吸附剂（Co3O4/ACM）。水热合成的 Co3O4 活性炭整体吸附剂 (Hm-Co3O4/ACM) 表现出比其他方法合成的吸附剂更好的吸附能力（SO2 为 123.1，NOx 为 130.2 mg/g）。吸附剂显示出对 NOx 吸附的高亲和力，这种影响与操作条件、吸附剂的物理和化学特性有关，这些特性在穿透曲线图中表示。此外，还研究了吸附剂的表面性质（BET）、热分解（TGA）、官能团（FTIR）、化学成分（XRD）和表面形貌（FESEM）。Langmuir 吸附等温线与实验结果相符，吸附剂在两个循环中的热再生显示 SO2 的平均再生效率为 94.4%，NOx 的平均再生效率为 94.8%。最后，讨论了再生后表征分析。