LOW TEMPERATURE SELECTIVE CATALYTIC REDUCTION OF NO AND NO2 WITH NH3 OVER ACTIVATED CARBON-SUPPORTED VANADIUM OXIDE CATALYST

摘要

Introduction Current commercial selective catalytic reduction (SCR) catalysts for the elimination of NOx such as V2O5/TiO2 and V2O5-WO3/TiO2 have to be operated in the temperature range at 300-400 ℃, resulting in complicated processes and high costs. One of the most promising solutions is the use of a low temperature SCR catalyst, such as activated carbon-supported vanadium oxide (V2O5/AC) catalyst. Another solution is the application of the so-called "fast SCR" reaction, with stoichiometry: 2NH3+NO+NO2→2N2+3H2O. Since NO2 can be adsorbed on carbon material to form nitrogen complexes, the SCR of NO and NO2 on the activated carbon-based catalyst may be different from other catalysts reported for "fast SCR".