Lee, YW Kim, HJ Park, JW Choi, BU Choi, DK Park, JW 2024-01-21T08:38:02Z 2024-01-21T08:38:02Z 2021-09-01 2003-07 0008-6223 https://pubs.kist.re.kr/handle/201004/138448 This study examined the individual and simultaneous adsorption of NOx (NO-NO2) and SO2 on activated carbon impregnated with KOH (KOH-IAC). For individual component adsorption, KOH-IAC showed a higher adsorption capacity in NO-NO2 rich air than in SO2-air. In the simultaneous adsorption of NO-NO2-SO2, SO2 showed a greater adsorption affinity than NO-NO2. The smaller the amount of NO-NO2 adsorbed, the more SO2 was adsorbed. XPS analysis of the adsorption of NO-NO2 rich SO2-air on KOH-IAC revealed that the adsorbed SO2 was predominantly found on the external surface, producing mainly K2SO4 and, additionally, H2SO4 and K2SO3. Depth profile analysis showed that the amount of SO2 adsorbed decreased regularly away from the surface, while the amount of adsorbed NO-NO2 increased irregularly. We confirmed that the presence of the impregnant in KOH-IAC is a determining factor in the adsorption of NO-NO2 and SO2 by chemical reaction. clarifying the surface chemical behavior. (C) 2003 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD NO REDUCTION POTASSIUM HYDROXIDE SURFACE-CHEMISTRY SULFUR-DIOXIDE REMOVAL OXYGEN CATALYST N2O Adsorption and reaction behavior for the simultaneous adsorption of NO-NO2 and SO2 on activated carbon impregnated with KOH Article 10.1016/S0008-6223(03)00105-2 1 CARBON, v.41, no.10, pp.1881 - 1888 CARBON 41 10 1881 1888 scie scopus 000184442400003 2-s2.0-0038825803 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article NO REDUCTION POTASSIUM HYDROXIDE SURFACE-CHEMISTRY SULFUR-DIOXIDE REMOVAL OXYGEN CATALYST N2O activated carbon chemical treatment chemisorption surface oxygen complexes