【摘要】 锰基催化剂具有较高的催化活性,且成本低,在选择性催化还原（SCR）尾气中的NO_x领域具有广阔应用前景。介绍了锰基低温SCR催化剂处理NO_x的最新进展。锰基催化剂可分为两类:锰氧化物催化剂和锰基掺杂过渡金属氧化物催化剂。针对锰氧化物催化剂,主要分析了锰的氧化价态、结晶形态、比表面积以及形态学对催化效果的影响;对于锰基掺杂过渡金属氧化物催化剂,重点分析了掺杂物对催化剂的催化能力、催化温度范围、N₂的选择性和抗SO₂、H₂O毒化能力的影响。最后在总结全文的基础上,展望了锰基催化剂的应用前景。更多还原

【Abstract】 Manganese（ Mn） based catalysts have relatively high catalytic activity and low cost,which has been widely used in selective catalytic reduction（ SCR） technology for the removal of NO_xfrom flue gas. The recent progress on the Mn-based catalysts for low-temperature SCR de-NO_xis systematically reviewed. On this basis,Mn-based catalysts are divided into two categories: single MnO_xcatalysts and Mn-based multi-metal oxide catalysts. According to single MnO_xcatalysts,the effects of Mn oxidation state,crystallization state,specific surface area and morphology on catalytic activity are systematically analyzed. For multi-metal oxide catalysts,the various facts dominated by the components of catalysts are summarized from four aspects,improving de-NO_xefficiency,extending operation temperature range,enhancing N₂ selectivity,and improving resistance to SO₂ and H₂O. Finally,the application prospect of manganese based catalysts are predicted according to the above summary.更多还原