The catalyst Ag/Al2O3 had been prepared by using sol-gel(SG) and impregnation (IM) methods

the physical properties

such as specific surface area and pore volume etc.

of said catalyst being measured by Autosorb-l-c physico-chemical adsorption meter

and test study on denitrification process being carried out by using the said catalyst and reducing agent C3H6. The results show that the said catalyst has good performance of denitrification under proper reaction temperature and space velocity condition; beside the reaction temperature and space velocity

there are many factors which affect greatly the Selective Catalytic Reduction (SCR) activity

including Ag content in the catalyst

molratio of C3H6/NO

initial NO concentration

and oxygen concentration in the flue gas. The test confirmed the best reaction temperature is between 450 ℃~500 ℃

and the best Ag content is about 2%.