Abstract：
Nitrogen oxides, mercury and chlorobenzene are important air pollutants emitted by waste incineration and other industries. Coordinated control of multiple pollutants has become an important technology for air pollution control. Through solid-phase structure control, the catalytic performance of the WCeMnOx/TiO2-ZrO2 catalyst for simultaneous catalytic removal of NO, mercury and simultaneous removal of NO and chlorobenzene were improved. MnWO4 improved the solid acidity of the catalyst and improved the catalytic activity at high temperature. The formation of Ce0·75Zr0·25O2, Ce2WO6, Ce2Zr2O7 and Ce2Ti2O7 improved the catalytic activity at low temperature. The presence of TiOSO4 would affect the valence of metal ions and the reduction of chemisorbed oxygen, thereby reducing the catalytic activity at low temperature. Within the same size range of nanoparticles, cyclic nanoparticles exposed more active sites due to their hollow structure, and their catalytic performance was better than spherical nanoparticles. The thickness of the circular nanoparticles of WCM/TZ-14 catalyst was about 14 nm, and the diameter was about 40 nm Ce0.75Zr0.25O2 and MnWO4 were also present in the phase composition. Therefore, it exhibited the best performance for simultaneous catalytic removal of NO, mercury and simultaneous removal of NO and chlorobenzene. The coincidence temperature window was 347-516 °C. Finally, WCM/TZ-14 catalyst followed both E-R and L-H mechanisms in the NH3-SCR reaction.
摘要：
氮氧化物,汞和氯苯是垃圾焚烧和其他行业排放的重要空气污染物。多种污染物的协调控制已成为大气污染控制的重要技术。通过固相结构控制，WCeMnOx/TiO2-ZrO2催化剂同时催化脱除NO的催化性能,汞和同时去除NO和氯苯得到改善。MnWO4进步了催化剂的固体酸性，进步了高温下的催化活性。Ce0·75Zr0·25O2，Ce2WO6，Ce2Zr2O7和Ce2Ti2O7的形成提高了低温下的催化活性。TiOSO4的存在会影响金属离子的化合价和化学吸附氧的还原,从而降低了低温下的催化活性。在相同大小的纳米粒子范围内，环状纳米颗粒由于其中空结构而暴露了更多的活性位点，其催化性能优于球形纳米粒子。WCM/TZ-14催化剂的圆形纳米颗粒的厚度约为14nm，并且直径约为40nm。Ce0.75Zr0.25O2和MnWO4也存在于相组成中。因此,它表现出最佳的同时催化去除NO的性能，汞和同时去除NO和氯苯。重合温度窗口为347-516°C。最后,WCM/TZ-14催化剂在NH3-SCR反应中遵循E-R和L-H两种机理。
