A series of sulfated CeO₂ catalysts were synthesized by impregnation and sol-gel methods and used for selective catalytic reduction（SCR） of NOx by NH₃. The results showed that the sulfated CeO₂ catalysts prepared by sol-gel method showed excellent catalytic activity at 150–450 °C, and more than 90% NOx conversion was obtained at 232–450 ℃ with a gas hourly space velocity of 60000 h^–1. The catalysts were characterized by X-ray diffraction（XRD）, N_2<... 

【文章來(lái)源】：Journal of Rare Earths. 2016,34(07)EISCICSCD

【文章頁(yè)數(shù)】：8 頁(yè)

【文章目錄】：
1 Experimental
    1.1 Catalyst preparation
        1.1.1 Sol-gel method
        1.1.2 Impregnating method
    1.2 Catalyst characterization
    1.3 Activity test
2 Results and discussion
    2.1 Catalytic activity of sulfated Ce O2catalysts
    2.2 XRD analysis
    2.3 Raman analysis
    2.4 N2adsorption-desorption
    2.5 Thermo-gravimetric analysis
    2.6 H2-TPR
    2.7 Py-IR
    2.8 Effect of surface acidity on the SCR activity
3 Conclusions


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期刊論文
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