抄録
Effects of the range of mean pore radius, pore volume and surface area over V2O5-CaO-Al2O3 catalysts for NO reduction with NH3 has been studied using a conventional flow reactor in the temperature range from 250 to 450°C under atmospheric pressure. Inlet gas concentration was 150ppm NO, 150ppm NH3, 3% O2, 1, 000 ppm SO2, 7.5% H2O (N2 balance) and the space velocity was 15, 000h-1. The activities of the catalysts depend on a pore size, in particular, V2O5-CaO-Al2O3 catalyst with peaks at 60-70 and 700Å revealed high NO reduction efficiencies in the temperature range from 250 to 450°C, furthermore, the catalytic activity did not change for 1, 000h at 350°C in the presence of SOx and H2O.
