J. Svachula et al., SELECTIVE REDUCTION OF NOX BY NH3 OVER HONEYCOMB DENOXING CATALYSTS, Industrial & engineering chemistry research, 32(6), 1993, pp. 1053-1060
Data are presented for the effects of feed composition (O2, NO(x), NH3
, H2O, SO2 concentrations) and of the operating conditions (area veloc
ity, reaction temperature, and Re number) on the NO(x) removal efficie
ncy over commercial-type honeycomb DeNOxing catalysts with different c
ompositions and geometric characteristics. All of these data are expla
ined by a Rideal type kinetic expression, derived assuming reaction be
tween strongly adsorbed ammonia and gaseous or weakly bonded NO. The s
ignificance of interphase and intraparticle diffusion limitations is d
iscussed, and a comprehensive model of the SCR monolith reactor is ill
ustrated which fully accounts for both external and internal transport
of the reactants as well as for the effects of the operating variable
s and of the feed composition under representative SCR conditions.