摘要
研究了在O_2和H_2O存在下,乙烯渣油沥青基活性炭纤维(ETP ACF)和粘胶基活性炭纤 维(Cellulose ACF)的脱硫活性。结果表明,在比表面积相近的情况下,ETP ACF的脱硫活性明显低 于Cellulose ACF,这可归因于后者具有较强的吸附和催化氧化SO_2能力及较大的吸水量,尤其是 具有较强的催化氧化SO_2的能力,这些能力又与其表面含有含氮官能团以及某些含氧官能团有 关,因此ACF的表面官能团对其脱硫活性影响很大.
The activities of activated carbon fibers (ACFs) from ethylene tar pitch (ETP) and cellulose were examined for the oxidative conversion of SO_2 into aq. H_2SO_4 in the presence of O_2 and H_2O. The results indicated that Cellulose ACF showed much higher activity than ETP ACF, owning to higher ability of SO_2 adsorption, higher catalytic activity for the oxidation of SO_2 to SO_3 and larger amount of H_2O adsorption, enhance catalytic activity for the oxidation of SO_2 to SO_3 showed highest among these abilities. These in turn depend on nitrogencontaining group and some oxygen-containing group in the surface of cellulose ACF, so the SO_2 removal activity of ACFs is affected by functional groups.
基金
国家自然科学基金
教育部回国人员科研启动基金
关键词
活性炭纤维
二氧化硫
烟气
脱硫活性
Activated carbon fibers
SO_2 removal
Catalytic properties