The selective catalytic reduction of nitric oxide by methane (CH₄-SCR) represents the most desirable technique for the post-treatment of nitrogen oxide emissions from gas-fired power plants and the efficient CH₄-SCR catalysts are being explored. We herein report the construction of bimetallic Ru-In/H-SSZ-13 catalyst, which exhibited remarkable performance in CH₄-SCR under the reaction conditions of a high gas hourly space velocity (GHSV) of 75,000 h⁻¹ and in the presence of 6% H₂O. In Ru-In/H-SSZ-13, the close contact between Ru and In species was confirmed by transmission electron microscopy (TEM) analysis, and their electronic interaction was verified by means of X-ray photoelectron spectroscopy (XPS) and temperature-programmed reduction by hydrogen (H₂-TPR). All these features made Ru-In/H-SSZ-13 an elegant example of zeolite-based cooperative catalytic system for CH₄-SCR. The surface species formed and their stability on Ru/H-SSZ-13, In/H-SSZ-13 and Ru-In/H-SSZ-13 were investigated by temperature-programmed desorption (TPD) experiments, from which the individual role of H-SSZ-13, Ru and In sites and their cooperation in CH₄-SCR were discussed in detail.

用甲烷（CH ₄ -SCR）选择性催化还原一氧化氮代表了对燃气发电厂排放的氮氧化物进行后处理的最理想技术，目前正在研究高效的CH ₄ -SCR催化剂。我们在此报告了双金属Ru-In / H-SSZ-13催化剂的构建，该催化剂在75,000 h ^-1的高气体时空速度（GHSV）和存在下的反应条件下在CH ₄ -SCR中表现出卓越的性能。6％的H ₂O.在Ru-In / H-SSZ-13中，Ru和In物种之间的紧密接触通过透射电子显微镜（TEM）分析得到证实，并且它们的电子相互作用通过X射线光电子能谱（XPS）和程序升温还原氢（H ₂ -TPR）。所有这些特征使Ru-In / H-SSZ-13成为CH ₄ -SCR的基于沸石的协同催化系统的典范。通过程序升温脱附（TPD）实验研究了Ru / H-SSZ-13，In / H-SSZ-13和Ru-In / H-SSZ-13上形成的表面物种及其稳定性。详细讨论了H-SSZ-13，Ru和In位点的合成及其在CH ₄ -SCR中的合作。