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Adsorption and reaction behavior for the simultaneous adsorption of NO–NO2 and SO2 on activated carbon impregnated with KOH

✍ Scribed by Young-Whan Lee; Hyun-Jin Kim; Jee-Won Park; Byung-Uk Choi; Dae-Ki Choi; Jin-Won Park

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
409 KB
Volume
41
Category
Article
ISSN
0008-6223

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✦ Synopsis

This study examined the individual and simultaneous adsorption of NO (NO-NO ) and SO on activated carbon x 2 2 impregnated with KOH (KOH-IAC). For individual component adsorption, KOH-IAC showed a higher adsorption capacity in NO-NO rich air than in SO -air. In the simultaneous adsorption of NO-NO -SO , SO showed a greater adsorption 2 2 2 2 2 affinity than NO-NO . The smaller the amount of NO-NO adsorbed, the more SO was adsorbed. XPS analysis of the 2 2 2 adsorption of NO-NO rich SO -air on KOH-IAC revealed that the adsorbed SO was predominantly found on the external 2 2 2 surface, producing mainly K SO and, additionally, H SO and K SO . Depth profile analysis showed that the amount of 2 4 2 4 2 3 SO adsorbed decreased regularly away from the surface, while the amount of adsorbed NO-NO increased irregularly. We 2 2 confirmed that the presence of the impregnant in KOH-IAC is a determining factor in the adsorption of NO-NO and SO 2 2 by chemical reaction, clarifying the surface chemical behavior.

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