乙烯渣油沥青基活性炭纤维和粘胶基活性炭纤维的表面性质与脱硫活性

The Activities of Activated Carbon Fibers from Ethylene Tar Pitch and Cellulose

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.