Reaction Kinetics and Catalysis Letters

, Volume 64, Issue 2, pp 337–342 | Cite as

Acid and catalytic properties of MnOm−ZrO2 (M=Ca, Ba, Sm, Yb) compositions

  • A. S. Ivanova
  • E. A. Paukshtis
  • V. A. Sobyanin
  • V. V. Galvita
Article

Abstract

Influence of the nature of MnOm in zirconia-based systems MnOm−ZrO2 (M=Ca, Ba, Sm, Yb) of approximately equimolar composition on their acid and catalytic properties in oxidative conversion of methane (OCM) have been studied. The surface of MnOm−ZrO2 systems has been found to contain practically no Brönsted acid sites. Lewis acid sites are represented by three types of L-sites, their total concentration per m2 decreasing in the series (Zr, Ca)O2>(Zr, Sm)O2>(Zr, Yb)O2. Activity of the catalysts in the OCM reaction is proportional to the specific surface area. Their selectivity to ΣC2 hydrocarbons increases in the series (Zr, Ca)O2<(Zr, Sm)O2<(Zr, Yb)O2.

Keywords

Zirconia-based catalysts acidity oxidative conversion of methane 

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Copyright information

© Akadémiai Kiadó 1998

Authors and Affiliations

  • A. S. Ivanova
    • 1
  • E. A. Paukshtis
    • 1
  • V. A. Sobyanin
    • 1
  • V. V. Galvita
    • 1
  1. 1.Boreskov Institute of CatalysisNovosibirskRussia

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