采用SnSO4和SnCl4两种不同的Sn前驱体制备了MnOx-SnO2/TiO2催化剂,并将其用于NH3选择性催化还原NO反应,研究发现以SnSO4为锡源制备的MnSnTi催化剂与以SnCl4为锡源制得的催化剂相比具有较好的低温催化活性及较宽的活性温度窗口。同时运用BET、XRD、SEM和NH3-TPD等表征手段对2种催化剂进行分析,结果表明:以SnSO4为锡源的MnSnTi催化剂具有较大的比表面积、较强的酸性以及Mn、Sn、Ti之间呈现出更强的相互作用使其脱硝活性优于以SnCl4为锡源的MnSnTi催化剂。 The MnOx-SnO2 / TiO2 catalyst was prepared by SnSO4 and SnCl4 two different Sn precursors and used for the selective catalytic reduction of NO with NH3. It was found that MnSnTi catalyst prepared with SnSO4 as tin source and SnCl4 as Sn source The prepared catalyst has better low-temperature catalytic activity and a wider active temperature window. The results show that MnSnTi catalyst with SnSO4 as tin source has large specific surface area, strong acidity and Mn, Sn and Ti Showed a stronger interaction between them to denitration activity than SnCl4 as a source of MnSnTi catalyst.