Semi-coke-based activated carbons (SACs) were prepared using semi-coke powders as raw materials. They were modified by organic reagents (benzene, methyl benzoate, and ethyl acetate), low-temperature plasma (CH₄ and N₂ atmosphere), and organic reagent-low temperature plasma synergistic methods. FT-IR analysis showed that the corresponding functional groups were introduced to the surface of the SACs and the absorption peak intensities of the corresponding functional groups were enhanced via low-temperature plasma treatment. Low-temperature N₂ adsorption tests showed that the organic reagent played an important role for regulated mesopores of the SACs. The adsorption capacities of the SACs for CH₄ and N₂ were measured via static volumetric method, and their separation factors of the CH₄/N₂ were calculated, in which the biggest separation factor (5.08) of CH₄/N₂ was obtained from the SAC-ben-P-N₂, which was synergistic modified by benzene and low-temperature plasma (N₂ atmosphere) and its breakthrough time of methane was 93 s. The biggest breakthrough time of methane (112 s) was acquired from the SAC-ben, which was modified by benzene and its separation factor of CH₄/N₂ was 4.87.

以半焦粉为原料制备了半焦基活性炭（SAC）。通过有机试剂（苯，苯甲酸甲酯和乙酸乙酯），低温等离子体（CH ₄和N ₂气氛）和有机试剂-低温等离子体协同方法对它们进行了改性。FT-IR分析表明，相应的官能团被引入SAC的表面，并且通过低温等离子体处理提高了相应官能团的吸收峰强度。低温N ₂吸附测试表明，有机试剂在SAC的中孔调节中起着重要作用。SAC对CH ₄和N ₂的吸附容量通过静态体积法测定，并计算CH ₄ / N ₂的分离因子，其中从SAC-ben-PN ₂获得CH ₄ / N ₂的最大分离因子（5.08），具有协同作用经苯和低温等离子体（N ₂气氛）改性，其甲烷穿透时间为93 s。从苯改性的SAC-ben中获得甲烷的最大穿透时间（112 s），CH ₄ / N _2的分离系数为4.87。