SELECTIVE CATALYTIC REDUCTION OF NO WITH HYDROCARBONS - EXPERIMENTAL AND SIMULATION RESULTS

The selective catalytic reduction (SCR) of NO was studied over alumina -based catalysts. The experimental data showed that the peak NO conver sion and the temperature range where each catalyst exhibits its highes t activity depend on the impregnated metal. Kinetic studies were carri ed out to estimate the apparent order of reaction with respect to the involved gases and the apparent activation energies, The catalytic act ivity of the alumina-based catalysts was also tested in a fixed-bed re actor unit under various reaction conditions. A mathematical model was applied to reproduce the experimental data using the experimentally d etermined reaction rate expression. The model predictions were in agre ement with the concentrations measured at the exit of the fixed-bed re actor, though no arbitrarily chosen parameters were used in the applic ation of the mathematical model.