Transient kinetic study on NO decomposition over Cu-ZSM-5 catalysts

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Abstract

Decomposition of NO was studied on Cu-clinoptilolite and Cu-ZSM-5 zeolites of different Si/Al ratio and copper ion exchange rate. During the first contact at 600°C with NO an irreversible oxygen uptake by the catalysts was observed. On the long pulse of the NO concentration in the transient stage carried out under isothermal condition, overshoots in N2 and O2 concentration were observed at the leading and falling edge, respectively. In the TPD experiments after NO adsorption a surface complex formulated as NO3 is decomposed at about the reaction temperature into equimolar amounts of NO and O2. The role of the surface complex in the NO decomposition is discussed.

Original languageEnglish
Pages (from-to)347-355
Number of pages9
JournalStudies in Surface Science and Catalysis
Volume116
Publication statusPublished - 1998

Fingerprint

Decomposition
decomposition
Zeolites
catalysts
Catalysts
Kinetics
kinetics
Temperature programmed desorption
leading edges
falling
zeolites
Copper
Ion exchange
Oxygen
Adsorption
copper
adsorption
oxygen
pulses
ions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

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abstract = "Decomposition of NO was studied on Cu-clinoptilolite and Cu-ZSM-5 zeolites of different Si/Al ratio and copper ion exchange rate. During the first contact at 600°C with NO an irreversible oxygen uptake by the catalysts was observed. On the long pulse of the NO concentration in the transient stage carried out under isothermal condition, overshoots in N2 and O2 concentration were observed at the leading and falling edge, respectively. In the TPD experiments after NO adsorption a surface complex formulated as NO3 is decomposed at about the reaction temperature into equimolar amounts of NO and O2. The role of the surface complex in the NO decomposition is discussed.",
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volume = "116",
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journal = "Studies in Surface Science and Catalysis",
issn = "0167-2991",
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T1 - Transient kinetic study on NO decomposition over Cu-ZSM-5 catalysts

AU - Schay, Z.

AU - Kiricsi, I.

AU - Guczi, L.

PY - 1998

Y1 - 1998

N2 - Decomposition of NO was studied on Cu-clinoptilolite and Cu-ZSM-5 zeolites of different Si/Al ratio and copper ion exchange rate. During the first contact at 600°C with NO an irreversible oxygen uptake by the catalysts was observed. On the long pulse of the NO concentration in the transient stage carried out under isothermal condition, overshoots in N2 and O2 concentration were observed at the leading and falling edge, respectively. In the TPD experiments after NO adsorption a surface complex formulated as NO3 is decomposed at about the reaction temperature into equimolar amounts of NO and O2. The role of the surface complex in the NO decomposition is discussed.

AB - Decomposition of NO was studied on Cu-clinoptilolite and Cu-ZSM-5 zeolites of different Si/Al ratio and copper ion exchange rate. During the first contact at 600°C with NO an irreversible oxygen uptake by the catalysts was observed. On the long pulse of the NO concentration in the transient stage carried out under isothermal condition, overshoots in N2 and O2 concentration were observed at the leading and falling edge, respectively. In the TPD experiments after NO adsorption a surface complex formulated as NO3 is decomposed at about the reaction temperature into equimolar amounts of NO and O2. The role of the surface complex in the NO decomposition is discussed.

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