The role of methyl radicals in the reduction of NO by CH4 over a Ba/MgO catalyst Academic Article uri icon


  • Under conventional flow conditions at 760 Torr, 4 mol% Ba/MgO is an effective catalyst for the reduction of NO by CH4. The conversion of NO at 700C is increased ca. threefold when O2 is added to the system. When reactions are carried out at 500 mTorr, CH3 radicals are detected in the gas phase over the catalyst with O2 as the oxidant, but not with NO as the oxidant. Moreover, CH3 radicals appear to react with NO, presumably to form CH3NO, which is believed to be an intermediate in the reduction reaction. The positive effect of O2 can thus be explained by its role in the generation of CH3 radicals.

published proceedings


author list (cited authors)

  • Xie, S. B., Rosynek, M. P., & Lunsford, J. H.

citation count

  • 12

complete list of authors

  • Xie, SB||Rosynek, MP||Lunsford, JH

publication date

  • January 1997