改性活性炭材料烟气脱硫研究进展

Development of Modified Activated Carbon as Adsorbent Used in Flue Gas Desulfurization

讨论了活性炭材料的表面官能团及其对脱硫能力的影响和脱硫机理,综述了国内外对活性炭材料进行改性处理的最新研究成果,包括金属离子或金属氧化物的负载、表面官能团的氧化以及酸碱处理等。在此基础上,提出了有待深入研究的几个问题:(1)通过表面改性使活性炭材料表面官能团类型分布更合理;(2)增强活性组分与表面官能团的协同作用;(3)进一步研究活性组分在SO2转化过程中的催化作用机理。

Up-to-date understanding of surface chemical structure of activated carbon, its application to flue gas desulfurization, mechanism of desulfurization and its modification were presented. The surface modification by oxygen and nitrogen groups, loading of metals or their compounds and acid or alkali treatment were also reviewed. Some future works were proposed, including： （1） surface modification to achieve an ideal distribution of different functional groups on surface of activated carbon; （2） strengthening synergistic interactions between the introduced active species and original surface functional groups; （3） catalytic mechanism of active species in SO2 conversion.