Effect of water vapor over Pd-Co/SZ catalyst for the NO selective reduction by methane

C. E. Quincoces, S. Guerrero, P. Araya, M. G. González*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


The selective catalytic reduction (SCR) of NO by CH4 in the presence of excess O2 has been studied on Pd-Co, Pd and Co catalysts supported on sulfated zirconia (SZ) and activated in reaction mixture at 700 °C. After the addition of Co on Pd/SZ, an promoting effect on the catalytic activity was achieved, especially on 0.2%Pd-2%Co/SZ, which showed the maximum NO conversion higher 60% at 500 °C and 31,000 h-1. The bimetallic catalyst presented practical activity in the presence of water vapor. Stable NOx conversion was obtained for over 50 h in the presence of 6% water vapor. In order to correlate the catalysts composition with their activity, they were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS) and temperature programmed reduction (TPR) techniques.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalCatalysis Communications
Issue number1
StatePublished - Jan 2005
Externally publishedYes

Bibliographical note

Funding Information:
This work has been supported by the ANPCyT (PICT 13-08112). We acknowledge Universidad de La Plata (Argentina), Universidad de Chile (Chile) and CYTED (España) for their financial assistance.


  • Methane
  • NO reduction
  • Sulfated zirconia
  • Water tolerance


Dive into the research topics of 'Effect of water vapor over Pd-Co/SZ catalyst for the NO selective reduction by methane'. Together they form a unique fingerprint.

Cite this