| 摘要 |
<p>PURPOSE:To prevent the diffusion and penetration of arsenic oxide into the pores of a catalyst and to keep high performance denitration action for a long period of time, by forming a waste gas denitration catalyst by supporting an active catalytic component on a catalyst carrier having a pore size of 3.6-5.8Angstrom . CONSTITUTION:A waste gas denitration catalyst is formed by supporting an active catalytic component on a catalyst carrier with a pore size of 3.6-5.8Angstrom , for example, 4A zeolite, 5A zeolite, analcime or erionite. Concretely, A-type zeolite ion-exchanged with Na is immersed in an amine solution of ammonium paratungstate to support 10wt% of tungsten oxide. Subsequently, the impregnated carrier is baked at 600 deg.C for 3hr and further immersed in an aqueous ammonium metavanadate solution to support 0.5wt% of vanadium oxide and the supported carrier is baked at 400 deg.C for 3hr to form a catalyst.</p> |
