【摘要】 本工作借助红外光谱、元素分析、比表面积测定等技术研究了空心活性碳纤维SNACF的碳化-活化机理。发现它与制备NACF的过程有明显不同:碳化过程中有硫氰酸气体释出,有带磺酸基的焦油状物排出,同时,含氮气体（HCN、NH₃）的释出量减少且释出温度提高;活化过程中可以获得更大的比表面积且活化时间可缩短。这与其原料的织构特征及化学成分有密切关系。更多还原

【Abstract】 By using the infrared spectroscopy, elemental analysis and mensuration of specific surface etc techniques, we have investigated the carbonizing-activating mechanism of the hollow activated carbon fiber SNACF. Experimental results have demonstrated that the mechanism features of preparation of SNACF are remarkably distinct from those obtained from NACF. In the case of SNACF, during the carbonization process thiocycanic acid gas (2060-2075 cm-1 peak) and tar-like substance with -SO3H groups were released. Moreover, the released amount of gas containing N (HCN, NH3) decreases while its relaese temperature is higher as compared with those of NACF. During the activating process more specific surface can be obtained, and the time of activation can be decreased. These differences are closely associated with the texture features of precusors used and thier chemical composition.更多还原