Kinetics of the selective catalytic reduction of NO with NH3 over MnOx/Al2O3 catalysts at low temperature

The steady-state kinetics of the selective catalytic reduction of NO with N H3 have been studied over a 2 wt% Mn/Al2O3 catalyst at 423 K using wide con centration ranges for NO, NH3 and O-2. Rate equations have been derived whi ch are based on a previously elucidated mechanistic model including paralle l Langmuir-Hinshelwood (LH) and Eley-Rideal (ER) pathways to N-2 production and inhibition by product water. These equations provide significantly bet ter fits of the kinetic data than rare equations based on either LH or ER m echanisms and may be used for further reactor design. (C) 1999 Elsevier Sci ence B.V. All rights reserved.