聚丙烯腈活性炭纤维对硫化氢的常温吸附

聚丙烯腈活性炭纤维（PAN-ACF）对硫化氢（H2S）有比其他活性炭材料更强的吸附能力。H2S在PAN-ACF上的吸附是一个兼具物理吸附特征的化学吸附、催化转化过程。其化学吸附位主要位于微孔表面。吸附过程为：H2S分子首先被物理吸附进入微孔空间，而后在微孔表面的化学吸附位上进行包含电子转移的化学吸附、催化氧化，在炭表面产生相对稳定的化学结构。

Adsorption Behavior of Hydrogen Sulfide onto PAN-Based ACF

PAN-based activated carbon fiber(PAN-ACF) have better adsorption property of hydrogen sulfide (H_2S) than other porous carbon materials. The adsorption process of H2S onto PANMCF is chemi-sorption process, which is of some characteristics of physi-sorption. The chemi-adsorption sites (such as pyrrole-like structure and some of oxygen-containing complexes) are mainly located at the surface of micropore of ACFs. The adsorption process is as following. First, the HZS molecular enter into the micropore. Then, the adsorbed HZS molecular are chemisorbed and oxidized at these adsorption sites. In the course of adsorption, nitrogen in pyrrole- like structure and some of oxygen-containing complexes take part as electron acceptors, and the former play greater role.