【摘要】 采用氨水沉淀-化学蒸气沉积法制备Mn-Fe/ZSM-5催化剂,并考察其NH₃-SCR脱硝性能。结果表明:Mn-Fe/ZSM-5催化剂具有很好的低温活性和较宽的活性温度范围,在180⁴50℃的温度范围,NO的脱除率达到98%以上。在该催化剂上活性组分具有很好的分散度、较高的还原能力、较适中的酸性和较好的低温抗硫性,且活性组分Mn和Fe之间存在着协同作用。在SO₂存在的条件下,Mn-Fe/ZSM-5催化剂的活性在240⁴50℃的温度范围内具有很好的抗硫性,NO的脱除率均高于98%.更多还原

【Abstract】 Mn-Fe/ZSM-5 catalyst was prepared by ammonia precipitation-chemical vapor deposition method and its performance of the selective catalytic reduction of NO by NH₃（NH₃-SCR）was investigated.Mn-Fe/ZSM-5 catalyst had better low temperature SCR activity and wider activity temperature range.NO conversion on it was up to 98% at 180⁴50 ℃.Meanwhile,this catalyst had better dispersity,higher ability of redox,more appropriate acidity and better resistance to SO₂.The active components Mn and Fe over Mn-Fe/ZSM-5 catalyst had a synergetic interaction.In presence of SO₂,Mn-Fe/ZSM-5 catalyst exhibited an excellent resisitance to SO₂ with a NO conversion of above 98% at 240⁴50 ℃.更多还原