Herein, a facile glycine combustion method was utilized to prepare a series of Ni and Mn based single/double metal oxides, which were evaluated as catalysts for low temperature selective catalytic reduction of NO with NH₃. The NiMn-T samples presented superior catalytic performance especially for NiMn-400, with ∼100 % NO_x conversion, >85 % N₂ selectivity within 90-300 °C, and better SO₂ resistance. The superior catalytic activity might be related to the coordination of Ni and Mn, which afforded higher Mn⁴⁺/Mnⁿ⁺ ratio, larger S_BET, more suitable acid site amounts and redox capacity. The improved SO₂ resistance of NiMn-400 catalyst can be ascribed to the less ammonium (bi)sulfate deposition and metal sulfation. In-situ DRIFTS revealed that the Ni doping could deliver more reactive species (NH₂, monodentate nitrite, bidentate nitrate), and the surface acidity is less affected by SO₂, which can account for the enhanced low temperature activity and SO₂ resistance of the NiMn-400 catalyst.

在本文中，利用简单的甘氨酸燃烧方法来制备一系列Ni和Mn基单/双金属氧化物，其被评价为用于用NH ₃低温选择性催化还原NO的催化剂。所述的NiMn-T的样品呈现优异的催化性能特别是对于的NiMn-400，具有约100％的NO _X转化率，> 85％N ₂内90-300℃的选择性，更好的SO ₂的阻力。较高的催化活性可能与Ni和Mn的配位有关，从而提供更高的Mn ⁴⁺ / Mn ^{n +}比，更大的S _BET，更合适的酸位和氧化还原能力。改进的SO ₂NiMn-400催化剂的耐腐蚀性可以归因于硫酸铵（双）硫酸盐的沉积和金属硫酸盐的减少。原位DRIFTS表明Ni掺杂可以提供更多的反应性物种（NH ₂，单齿亚硝酸盐，双齿硝酸盐），并且表面酸度受SO _2的影响较小，这可以解释其增强的低温活性和SO ₂耐受性的原因。 NiMn-400催化剂。