中文摘要：

采用透射电镜（TEM）、X射线光电子能谱（XPS）、红外光谱（FT-IR）、SCR反应和程序升温脱附（TPD）等手段研究了碳纳米管（CNTs）担载的五氧化二钒（V2O5/CNTs）催化剂的形貌、表面形态以及SO2对选择催化NO还原活性的影响。结果表明,SO2对V2O5/CNTs催化剂的催化活性具有明显的促进作用,其促进作用源于SO2在催化剂表面的吸附。吸附的SO2主要位于碳表面而非钒表面,而且这种促进作用与V2O5和碳表面之间协同作用有关。

英文摘要：

TEM,XPS,FT-IR ,SCR reaction and TPD were employed to study the morphology and surface structure of the carbon nanotube supported vanadia （V2Os/CNTs） catalysts, and the effect of SO2 on SCR activity. The results showed that SO2 showed a significant promoting effect on the activity of V2O5/CNTs for NO reduction with ammonia at low temperatures （250℃）. The promoting effect of SO2 on the catalytic activity was due to the adsorption of SO2 on the catalyst surface. The adsorbed SO2 was linked to carbon surfaces other than vanadium surfaces. This promoting effect of SO2 on the catalytic activity had relationship with a synergetie role between carbon and V2O5.