中文摘要：

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.

英文摘要：

Alumina‐carbon nanotube(Al2O3‐CNT) supports were prepared by the decomposition of acetylene on Al2O3. The subsequent impregnation of Pt and Ba yielded Pt/Ba/Al2O3‐CNT. Pt/Ba/Al2O3‐CNT was characterized by X‐ray diffraction, scanning and transmission electron microscopies, N2 physisorption, X‐ray photoelectron spectroscopy, and in‐situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS). The relationship between the structure and properties of Pt/Ba/Al2O3‐CNT was investigated. Pt/Ba/Al2O3‐CNT exhibited much higher resistance to SO2 poisoning and better regeneration ability than Pt/Ba/Al2O3, during NOx reduction in the presence of SO2. In‐situ DRIFTS spectra suggested that SO2 had no effect on the NOx storage and reduction process.