摘要 : Selective catalytic reduction of NOx with ammonia (NH3-SCR) under the exposure of multiple poisons in fly ash remains a great challenging issue for environmental protection. Herein, the intelligently self-tunable defense effects o... 展开 Selective catalytic reduction of NOx with ammonia (NH3-SCR) under the exposure of multiple poisons in fly ash remains a great challenging issue for environmental protection. Herein, the intelligently self-tunable defense effects of Ce(SO4)(2) additive modification for the V2O5/CeO2 catalyst with excellent resistance against K and Zn co-poisoning was originally illustrated. The Ce(SO4)(2) additive could firstly act as an inhibitor to certainly restrain the electron transfer between V and Ce species to decrease the redox property, but the high NOx reduction efficiency of Ce(SO4)(2) modified fresh catalyst could be maintained due to the enhancement of vanadium species polymerization and acidity. Unexpectedly, the Ce(SO4)(2) additive would smartly translate to act as a promoter over the co-poisoned catalyst to effectively combine with poisons, thus releasing most active vanadium species to exhibit superior co-poisoning resistance to K and Zn. This work provides a novel self-tunable multi-poisoning-resistant strategy via acid additive modification for SCR catalysts. 收起