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通过乙炔在Al2O3上的分解制备碳纳米管-氧化铝(Al2O3-CNTs)载体.采用浸渍法,分别制备了Pt/Ba/Al2O3-CNTs和Pt/Ba/Al2O3催化剂.利用XRD,SEM,TEM,低温N2物理吸附,XPS和in-situ DRIFTS等手段对催化剂的物化性质进行了表征.结果表明,在SO2存在下的NOx还原反应中,Pt/Ba/Al2O3-CNTs比Pt/Ba/Al2O3具有更高的抗SO2性能和再生性能.In-situ DRIFTS表明SO2的存在对NOx储存还原的途径没有影响.
Pt / Ba / Al2O3-CNTs and Pt / Ba / Al2O3 catalysts were prepared by impregnation method.The decomposition of acetylene on Al2O3 was carried out to prepare the carbon nanotubes-alumina (Al2O3-CNTs) The physical and chemical properties of the catalysts were characterized by low temperature N2 physical adsorption, XPS and in-situ DRIFTS.The results showed that the Pt / Ba / Al2O3-CNTs had a better performance than Pt / Ba / Al2O3 in the NOx reduction reaction in the presence of SO2 High anti-SO2 performance and regeneration performance.In-situ DRIFTS shows that the presence of SO2 has no effect on the NOx storage reduction pathway.