| 초록 |
NOx from flue and exhaust gas continue to be a major source of air pollution. Selective catalytic reduction(SCR)is a important method for NOx removal from exhaust systems of mobile and stationary sources. Many Kinds of catalysts for NH3 SCR and urea SCR have been studied, while the development of catalysts for HC SCR and H2 SCR have been little studied. Consequently, no effective catalysts for H2 SCR have been discussed until recently. The first purpose of this work is to study the silver species and reducibility and dispersion of silver in Ag/TiO2 prepared by impregnation and sol-gel method using XPS, H2-TPR,XRD and TEM.The second purpose is to understand the effect of these characteristics on the catalytic activity of H2- SCR. |
