【摘要】 采用浸渍法制备Cu_Na_ZSM₅催化剂 ,用C3H6 作还原剂 ,考察了贫燃条件下不同Cu2 +担载量、不同硅铝的量比和不同焙烧温度对Cu_Na_ZSM₅催化剂上选择还原NO的活性影响 ,并与Cu_SAPO₁ 1、Cu_SAPO₃4和Cu_Al2 O3进行比较 .实验结果表明 ,硅铝量比为2 5、担载Cu2 +的质量分数为 3%、 5 0 0℃焙烧制得的Cu_Na_ZSM₅分子筛催化剂具有较好的催化活性 ,反应温度为 350℃时 ,NO转化率高达 94. 3% .更多还原

【Abstract】 The Cu_Na_ZSM₅ was prepared by impregnation method. The effects of Cu 2+ loading weight, N（Si/Al） ratio and calcining temperature on catalytic activity of NO reduction with propene（C 3H 6） as reductant in the presence of excess oxygen were investigated,and Cu_Na_ZSM₅（N（Si/Al）） was compared with Cu_SAPO₁1, Cu_SAPO₃4 and Cu_Al 2O 3 on catalytic activity. The result indicated that Cu_Na_ZSM₅ with N（Si/Al） ratio 25 by 3% Cu 2+ loaded, and 500℃calcined, was higher catalytic activity, and NO conversion was 94.13% at 350℃.更多还原