制备了KOH改性活性炭吸附剂并用于脱除低浓度羰基硫（COS），利用氮气物理吸附、X射线光电子能谱、CO₂程序升温脱附、傅里叶变换红外光谱对吸附剂进行表征。考察了浸渍液质量分数及吸附条件对改性活性炭脱除COS性能的影响，并进行了再生性能测试。实验结果表明，浸渍液质量分数为10%时吸附剂的穿透吸附量最大，为40.64 mg/g；在一定范围内，吸附效果与原料气流速成反比，与吸附温度成正比；COS在吸附剂表面反应主要生成了硫酸盐和硫单质；经过4次再生后，10OH/AC吸附剂的穿透吸附量仍达34.32 mg/g，表明10OH/AC吸附剂具备一定工业应用潜力。

KOH modified activated carbon adsorbent is prepared and used to remove low concentration of carbonyl sulfide (COS).This adsorbent is characterized by N₂ physical adsorption,XPS,CO₂-TPD and FT-IR.Influences of the concentration of KOH solution and the adsorption conditions on the adsorbent's adsorption performance to COS are studied.The regeneration property of the adsorbent is also investigated.Experimental results show that the breakthrough adsorption capacity of the adsorbent reaches the maximum value 40.64 mg·g^-1 when the concentration of impregnation solution is 10wt% (10OH/AC).In a certain range,the adsorption effect is inversely proportional to the flow rate and positively proportional to adsorption temperature.After reaction,COS forms into sulfate and sulfur on adsorbent surface.The breakthrough adsorption capacity of 10OH/AC adsorbent can still reach 34.32 mg·g^-1 after four times of regeneration,showing a good industrial application prospect.

王海沛(1994-),女,硕士研究生,研究方向为气体吸附分离,657054822@qq.com。