In this study, Manganese oxide (MnO_x) was supported on activated coke modified by (NH₄)₂S₂O₈ (ACs) to obtain novel MnO_x/ACs catalysts with high NO_x removal performance by excessive impregnation method. The influence of precursor and loading amount of MnO_x on the catalytic efficiency were studied. The Mn₃O₄ supported on ACs samples prepared with manganese acetate tetrahydrate as precursor and the loading amount of 8% Mn is the most effective in NO_x removal among modified samples and its removal efficiency is 97% at 180 °C. And the adsorption state and reaction behaviors of NH₃, NO and O₂ on MnO_x/ACs catalysts were measured by in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS) in different conditions in order to study the effect of MnO_x and the reaction mechanism. The results suggested that Eley-Rideal and Langmuir-Hinshelwood mechanism existed simultaneously for the selective catalytic reduction of NO over the MnO_x/ACs catalyst.

本研究以（NH ₄）₂ S ₂ O ₈（ACs）改性的活性炭为载体负载氧化锰（MnO _x），通过过量浸渍法获得了具有较高NO _x去除性能的新型MnO _x / ACs催化剂。研究了前驱体和MnO _x的负载量对催化效率的影响。将Mn ₃ ö ₄ AC支持样品用醋酸锰四水合物制备的前体和8％的负载量的Mn是最有效的在NO _X在改性样品中进行去除，在180°C时去除率为97％。和吸附状态和NH的反应行为₃，NO和O ₂上的MnO _X / ACS催化剂通过测量原位漫反射红外线傅里叶变换光谱法（原位在不同条件下DRIFTS）为了研究的MnO的效果_X和反应机理。结果表明，Eley-Rideal和Langmuir-Hinshelwood机理同时存在于MnO _x / ACs催化剂上选择性催化还原NO 。