Catalysis Letters

, Volume 29, Issue 1–2, pp 1–6 | Cite as

Catalytic reduction of NO by propene in the presence of oxygen over mechanically mixed metal oxides and Ce-ZSM-5

  • Chikafumi Yokoyama
  • Makoto Misono


The mechanical mixing of Mn2O3 or CeO2 to Ce-ZSM-5 considerably enhanced the rate of the reduction of NO by propene in the low to medium temperature region, although Mn2O3 or CeO2 itself was much less active for this reaction. In contrast, Mn2O3 was highly active and CeO2 was moderately active for the oxidation of NO to NO2. On the basis of the comparison of the rates of the C3H6 + O2, NO + C3H6 + O2 and NO2 + C3H6 + O2 reactions over these catalysts, a bifunctional mechanism is proposed, in which Mn2O3 and CeO2 accelerate the oxidation of NO and the subsequent reaction steps between NO2 and propene proceed on Ce-ZSM-5.


reduction of NO Ce-ZSM-5 mechanical mixing Mn2O3 CeO2 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    Volkswagen, Ger. Offen DE 364208 (1987); Toyota, JapanKokai 1988-100919.Google Scholar
  2. [2]
    M. Iwamoto,Proc. Meeting on Catalytic Technology for Removal of Nitrogen Oxides, Catalysis Society of Japan (1990) p. 17.Google Scholar
  3. [3]
    W. Held, A. König, T. Richter and L. Puppe, SAE Paper (1990)900469.Google Scholar
  4. [4]
    K. Yogo, S. Tanaka, M. Ihara, T. Hishiki and K. Kikuchi, Chem. Lett. (1992) 1025.Google Scholar
  5. [5]
    Y. Li and J.N. Armor, Appl. Catal. B1 (1992) L31.Google Scholar
  6. [6]
    H. Hamada, Y. Kintaichi, M. Sasaki and T. Ito, Appl. Catal. 75 (1991) L1.Google Scholar
  7. [7]
    M. Misono andK. Kondo, Chem. Lett. (1991) 1001.Google Scholar
  8. [8]
    C. Yokoyama and M. Misono, Chem. Lett. (1992) 1669.Google Scholar
  9. [9]
    C. Yokoyama and M. Misono, Bull. Chem. Soc. Jpn. 67 (1994) 557.Google Scholar
  10. [10]
    T. Nakatsuji, H. Shimizu and R. Yasukawa, preprint of JECAT'91, Tokyo (1991) p. 23.Google Scholar
  11. [11]
    C. Yokoyama, H. Yasuda and M. Misono, Shokubai 35 (1993) 122.Google Scholar
  12. [12]
    M. Sasaki, H. Hamada, Y. Kintaichi and T. Ito, Catal. Lett. 15 (1992) 297.Google Scholar
  13. [13]
    K. Yogo, M. Ihara, M. Umeno, I. Terasaki, H. Watanabe and E. Kikuchi, Shokubai 35 (1993) 126.Google Scholar
  14. [14]
    J.O. Petunchi and W.K. Hall, Appl. Catal. B 2 (1993) L17.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • Chikafumi Yokoyama
    • 1
  • Makoto Misono
    • 1
  1. 1.Department of Applied Chemistry, Faculty of EngineeringThe University of TokyoTokyoJapan

Personalised recommendations