NO _x storage and reduction (NSR) technology has been regarded as one of the most promising strategies for the removal of nitric oxides (NO _x ) from lean-burn engines, and the potential of the plasma catalysis method for NO _x reduction has been confirmed in the past few decades. This work reports the NSR of nitric oxide (NO) by combining non-thermal plasma (NTP) and Co/Pt/Ba/γ-Al₂O₃ (Co/PBA) catalyst using methane as a reductant. The experimental results reveal that the NO _x conversion of NSR assisted by NTP is notably enhanced compared to the catalytic efficiency obtained from NSR in the range of 150 C–350 C, and NO _x conversion of the 8% Co/PBA catalyst reaches 96.8% at 350 C. Oxygen (O₂) has a significant effect on the removal of NO _x , and the NO _x conversion increases firstly and then decreases when the O₂ concentration ranges from 2% to 10%. Water vapor reduces the NO _x storage capacity of Co/PBA catalysts on account of the competition for adsorption sites on the surface of Co/PBA catalysts. There is a negative correlation between sulfur dioxide (SO₂) and NO _x conversion in the NTP system, and the 8% Co/PBA catalyst exhibits higher NO _x conversion compared to other catalysts, which shows that Co has a certain SO₂ resistance.

NO _x存储和还原（NSR）技术已被视为从稀薄燃烧发动机中去除一氧化氮（NO _x）的最有希望的策略之一，并且等离子体催化方法用于NO _x还原的潜力已经得到证实。在过去的几十年中。这项工作通过使用甲烷作为还原剂，将非热等离子体（NTP）与Co / Pt / Ba / γ- Al ₂ O ₃（Co / PBA）催化剂相结合，报告了一氧化氮（NO）的NSR 。实验结果表明，该NO _X通过NTP辅助NSR的转化效率显着提高相对于在150 C-350℃的范围内从NSR获得的催化效率，和NO _X 8％Co / PBA催化剂在350℃时的转化率达到96.8％。氧气（O ₂）对NO _x的去除具有显着影响，当O ₂浓度为2时，NO _x的转化率先升高然后降低。％至10％。由于对Co / PBA催化剂表面上的吸附位的竞争，水蒸气降低了Co / PBA催化剂的NO _x储存能力。NTP系统中的二氧化硫（SO ₂）与NO _x转化率之间呈负相关，并且8％Co / PBA催化剂比其他催化剂具有更高的NO _x转化率，这表明Co具有一定的SO ₂ 反抗。