【摘要】 采用乙醇代替氨作脱除NOx的还原剂。用浸渍法制备一系列铜基催化剂,考察了CuO含量、反应温度和载体对催化剂活性的影响,并用TPR和BET法分别研究了铜基催化剂的还原性能及物理结构。结果显示,10%CuO/TYZp-3(合成莫来石)催化剂具有较好的催化性能,在350℃使NOx的转化率达98.7%;而10%CuO/20%TiO2--γAl2O3低温活性好,250℃时使NOx的转化率达46.4%;以-γAl2O3、-αAl2O3、SiO2、TiO2-γ-Al2O3为载体的CuO催化剂使NOx的转化率在高于400℃时均达99%左右。更多还原

【Abstract】 Ethanol was used as a reducing agent instead of NH₃ for the removal of NO_x. A series of Copper-supported catalysts were prepared via impregnation method. The effects of temperature and the support were studied. The （reduction） activity and texture of the catalysts were examined by TPR and BET methods. It was found that 10%CuO/TYZp-3 exhibited good catalytic activity at high temperatures, and the NO_x conversion reached 98.7% at 350 ; and 10%CuO/20%TiO₂-γ-Al₂O₃ showed good catalyic activity at low temperatures, and the NO_x （conversion） reached 46.4% at 250 . And at above 400 , the NO_x conversion over other CuO catalysts reached 99%.更多还原