Catalysis Letters

, Volume 74, Issue 3, pp 193–199

Theoretical Analysis of N2O to N2 Conversion During the Catalytic Decomposition of NO by Cu-Zeolites

  • D. Sengupta
  • J.B. Adams
  • W.F. Schneider
  • K.C. Hass
Article

DOI: 10.1023/A:1016641319587

Cite this article as:
Sengupta, D., Adams, J., Schneider, W. et al. Catalysis Letters (2001) 74: 193. doi:10.1023/A:1016641319587

Abstract

Catalytic reactions of N2O in Cu-exchanged silica zeolites (ZSM-5) have been investigated theoretically using first-principles density functional theory (DFT). We consider four possible reaction paths for the production of N2, including (i) ZCu+N2O→ZCuO+N2, (ii) ZCuO+N2O→ZCuO2+N2, (iii) ZCu+NO+N2O→ZCuNO2+N2 and (iv) ZCu+NO2+N2O→ZCuNO3+N2 (“Z” refers to zeolites). Reactions (i) and (iii) are found to be the most favorable, whereas reactions (ii) and (iv) have much larger barriers. The implication for N2O reactions in non-selective reduction of NO by CO is also discussed.

Cu-ZMS-5zeolitesDFTnitric oxide

Copyright information

© Plenum Publishing Corporation 2001

Authors and Affiliations

  • D. Sengupta
    • 1
  • J.B. Adams
    • 1
  • W.F. Schneider
    • 2
  • K.C. Hass
    • 2
  1. 1.Department of Chemical, Bio and Materials EngineeringArizona State UniversityTempeUSA
  2. 2.Ford Research LaboratoryDearbornUSA