SO2促进的碳纳米管负载V2O5催化剂用于NH3选择性还原NO

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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。
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