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

Young Whan Lee, Hyun Jin Kim, Jee Won Park, Byung Uk Choi, Dae Ki Choi, Jin Won Park

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1881-1888
Number of pages8
JournalCarbon
Volume41
Issue number10
DOIs
Publication statusPublished - 2003 Jul 28

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Activated carbon
Adsorption
Air
Chemical reactions
X ray photoelectron spectroscopy

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

Lee, Young Whan ; Kim, Hyun Jin ; Park, Jee Won ; Choi, Byung Uk ; Choi, Dae Ki ; Park, Jin Won. / Adsorption and reaction behavior for the simultaneous adsorption of NO-NO2 and SO2 on activated carbon impregnated with KOH. In: Carbon. 2003 ; Vol. 41, No. 10. pp. 1881-1888.
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abstract = "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.",
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Adsorption and reaction behavior for the simultaneous adsorption of NO-NO2 and SO2 on activated carbon impregnated with KOH. / Lee, Young Whan; Kim, Hyun Jin; Park, Jee Won; Choi, Byung Uk; Choi, Dae Ki; Park, Jin Won.

In: Carbon, Vol. 41, No. 10, 28.07.2003, p. 1881-1888.

Research output: Contribution to journalArticle

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T1 - Adsorption and reaction behavior for the simultaneous adsorption of NO-NO2 and SO2 on activated carbon impregnated with KOH

AU - Lee, Young Whan

AU - Kim, Hyun Jin

AU - Park, Jee Won

AU - Choi, Byung Uk

AU - Choi, Dae Ki

AU - Park, Jin Won

PY - 2003/7/28

Y1 - 2003/7/28

N2 - 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.

AB - 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.

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