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Catalysis Letters

, Volume 98, Issue 1, pp 57–60 | Cite as

Synthesis of Novel Ag Modified MCM-41 Mesoporous Molecular Sieve and Beta Zeolite Catalysts for Ozone Decomposition at Ambient Temperature

  • Narendra Kumar
  • Petya M. Konova
  • Anton Naydenov
  • Teemu Heikillä
  • Tapio Salmi
  • Dmitry Yu. Murzin
Article

Abstract

Mesoporous molecular sieve Na-MCM-41 with Si/Al ratio 20 and 50 and Na-beta zeolite with Si/Al ratio 11 were synthesized and characterized using X-ray powder diffraction, scanning electron microscope and nitrogen adsorption. The Ag (5 and 2 wt%) modifications of H-MCM-41-20, H-MCM-41-50 and H-beta-11 catalysts were carried out using impregnation method. The catalysts were tested in the decomposition of ozone at ambient temperature. The 5 wt% Ag-H-MCM-41 catalyst showed a very high decomposition of ozone (~98%). The 5 wt% Ag-H-MCM-41-50 catalyst exhibited higher decomposition rate than 2 wt% Ag-H-MCM-41-50. The Ag modified H-MCM-41 catalyst with higher Si/Al ratio showed higher reaction rate than the catalyst with lower Si/Al ratio. The H-MCM-41 catalyst without Ag exhibited the lowest decomposition of ozone indicating an important role of Ag in the reaction.

Keywords

Zeolite Ozone Ambient Temperature Powder Diffraction Decomposition Rate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 2004

Authors and Affiliations

  • Narendra Kumar
    • 1
  • Petya M. Konova
    • 2
  • Anton Naydenov
    • 2
  • Teemu Heikillä
    • 3
  • Tapio Salmi
    • 1
  • Dmitry Yu. Murzin
    • 1
  1. 1.Laboratory of Industrial ChemistryProcess Chemistry Centre, Åbo Akademi UniversityFinland
  2. 2.Institute of General and Inorganic ChemistryBulgarian Academy of SciencesBulgaria
  3. 3.Department of Industrial PhysicsTurku UniversityFinland

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