| 摘要 |
PURPOSE:To increase the rate of reduction and removal of nitrogen oxides by supporting zeolite and the oxide of a specified metal on a porous carrier. CONSTITUTION:A porous carrier such as a porous monolithic base material mode of cordierite or a metal is coated with zeolite. The coated carrier is soaked in a soln. of the oxide of a metal such as Cu, Fe, Mn, Ni, Cr or Co, dried and baked at >=about 500 deg.C support the metal oxide on the zeolite layer. The resulting catalyst increases the rate of denitration and can reduce pressure drop. |
