燃煤烟气中零价汞的高效氧化是控制汞排放的技术关键，利用选择性催化还原脱硝（SCR）催化剂对零价汞进行催化氧化的协同控制技术备受关注。常规的SCR催化剂对零价汞协同氧化作用有限，且对其作用机制缺乏认识。为此，本课题在对SCR催化剂促进零价汞氧化的作用机制进行探索的基础上，研究以SCR脱硝技术为基础的多污染物协同控制体系。通过研究，揭示SCR催化剂对零价汞的催化机制及关键限制性因素；研制出与SCR脱硝相匹配的多效催化材料（SCR-Plus），实现对零价汞及逃逸氨的协同控制；构建高效的SCR-Plus催化反应体系并进行优化，寻求多效催化反应之间协同的最佳制衡条件（trade-off）与作用原理；揭示零价汞在催化剂表面的催化反应机制，阐明催化剂对氨的协同催化氧化机制；剖析多组分催化氧化复杂体系的反应动力学规律。通过研究，为利用SCR催化脱硝技术协同零价汞的转化及逃逸氨控制提供科学依据及应用基础。

The oxidation of elemental mercury (Hg0) in flue gas can faciliate its removal by the con-benefit from the other flue gas cleaning devices, and the role of the selective catalytic reduction of NOx (SCR) catalysts on the oxidation of Hg0 has been paid more attention. However, it has been found that most of the conventional SCR catalysts showed less active to Hg0 oxidation, and it catalysis mechanism is still unclear. Therefore, several attempts will be performed in this study to obtain the better understanding of such a process, and SCR-Plus catalyst will be put forward and developped for the purpose of the effective oxidation for both Hg0 and slip ammonia from SCR process. According to these studies, it is expected that proper explanations for Hg0 oxidation over V/W/Ti type SCR catalyst can be acieved, and the limiting factors that confine the oxidation will be revealed. Accordingly, an efficient SCR-Plus catalysis system for Hg0 oxidation and ammonia decompositon will be built up. The multi-function catalytic materials aiming at Hg0 oxidation and ammonia decomposition will be prepared, characterized, and selected by their integrative performance. The compound catalysis mechanisms for Hg0 and ammonia will probed by various methods, such as the in-situ IR scanning (DRIFT) and XPS. The proper model will be set up and employed to describe such dynamic processes. The study will bring out much significant contribution to the co-benefit of SCR process for the simultaneous control of mercury and the slip ammonia from the view of both the fundamental principle and industrial application.