title: [Low-temperature catalytic reduction of NO over Fe-MnOx-CeO2/ZrO2 catalyst].
abstract: Fe-MnOx-CeO2/ZrO2 catalysts were prepared through impregnation method with nanometer ZrO2 as a carrier and used in selective catalytic reduction of NO with NH3 at low temperature. Effects of active component ratio and loading of promoter on the catalyst activity were investigated. The catalysts were characterized by means of XRD, SEM, EDS and BET. The effects of temperature, SO2 and H2O on NO conversion were studied and the results showed that in the absence of SO2 and H2O, the catalyst of 8% Fe-10% MnOx-CeO2/ZrO2 had good activity and stability as well as the NOx removal efficiency reached 85.23% at 120 degrees C and 92.0% at 180 degrees C. The presence of SO2 and H2O results in the catalyst deactivated. Properties of the catalyst on different reaction stages were characterized by FT-IR to study the inactivation mechanism of the catalyst. The results showed that the catalyst deactivation was due to the deposition of ammonium sulfate on the catalyst and the sulphation of the catalyst.
authors.affiliation: School of Geography Science, Nanjing Normal University, Nanjing 210046, China. liurongle@163.com
authors.forename: Rong
authors.initials: R
authors.lastname: Liu
authors.forename: Zhi-Qin
authors.initials: ZQ
authors.lastname: Yang
mesh_terms: D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D005296:Ferrous Compounds / Q000737:chemistry; D017895:Manganese Compounds / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry; D009589:Nitrogen Oxides / Q000737:chemistry* / Q000302:isolation & purification; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D013696:Temperature; D015040:Zirconium / Q000737:chemistry*
chemical_list: D005296:Ferrous Compounds; D017895:Manganese Compounds; D009589:Nitrogen Oxides; D010087:Oxides; D000644:Quaternary Ammonium Compounds; D002563:Cerium; C030583:ceric oxide; C027424:manganese oxide; D015040:Zirconium; C034236:ferrous oxide; C028541:zirconium oxide