低温选择催化还原NO催化剂的制备及其性能研究

Preparation and catalytic performance of catalysts used for the selective catalytic reduction of NO at low temperature

采用等体积浸渍法制备Mn-Ti-PILC、Co-Ti-PILC、Fe-Ti-PILC、Cu-Ti-PILC和V-Ti-PILC催化剂,并应用于丙烯选择催化还原NO(C3H6-SCR)体系中。结果显示,N2最高收率由高到低的顺序依次为Cu-Ti-PILC>Fe-Ti-PILC>V-Ti-PILC>Mn-Ti-PILC>Co-Ti-PILC,N2最高收率所对应的反应温度由低到高的顺序依次为Mn-Ti-PILC<Cu-TiPILC<Fe-Ti-PILC=Co-Ti-PILC<V-Ti-PILC。

Mn-Ti-PILC,Co-Ti-PILC,Fe-Ti-PILC,Cu-Ti-PILC and V-Ti-PILC catalysts were prepared using impregnation method and used for selective catalytic reduction（ SCR） of NO by propylene. The results of C3H6-SCR showed that the maximum yield on N2 followed an order of Cu-Ti-PILC 〉 Fe-Ti-PILC 〉V-Ti-PILC 〉 Mn-Ti-PILC 〉 Co-Ti-PILC,and the reaction temperatures corresponding to the maximum yield on N2 were in order of Mn-Ti-PILC 〈 Cu-Ti-PILC 〈 Fe-Ti-PILC = Co-Ti-PILC 〈 V-Ti-PILC.