title: Low-temperature selective catalytic reduction of NO on CeO2-CuO/Al2O3 catalysts prepared by different methods.
abstract: CeO2-CuO/Al2O3 catalysts were prepared by three different methods and their activities for selective catalytic reduction (SCR) of NO with NH3 were investigated. As can be seen from the experimental results, the catalyst prepared by the single-step sol-gel (SG) method showed the best SCR activity and resistance to SO2 and H2O. In order to investigate the relationship between the preparation method and the performance of SCR catalysts, the catalysts were characterized by using Brunauer-Emmett-Teller, X-ray diffraction, temperature programmed reduction with hydrogen, temperature programmed desorption with ammonia, X-ray photoelectron spectroscopy, Fourier transform infrared and thermo-gravimetric analysis techniques. It was found that the excellent performance of CeO2-CuO/Al2O3 catalyst prepared by the single-step SG method should be resulted from its large surface area, low crystallinity, high oxygen storage capacity, high NH3 adsorption capacity, high concentration of surface chemisorbed oxygen, weak sulphation process and weak water absorption.
authors: Rui-Tang
authors: RT
authors: Guo
authors: Wen-Long
authors: WL
authors: Zhen
authors: Wei-Guo
authors: WG
authors: Pan
authors: Jie-Nan
authors: JN
authors: Hong
authors: Qiang
authors: Q
authors: Jin
authors: Cheng-Gang
authors: CG
authors: Ding
authors: Shi-Yi
authors: SY
authors: Guo
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D009569:Nitric Oxide / Q000737:chemistry*; D013458:Sulfur Dioxide / Q000737:chemistry; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D013458:Sulfur Dioxide; D002563:Cerium; D009569:Nitric Oxide; C030583:ceric oxide; D003300:Copper; D000537:Aluminum Oxide; C030973:cupric oxide