title: [Selective reduction of NOx with propene over SnO2/Al2O3 catalyst].
abstract: In the study, a series of SnO2/Al2O3 catalysts with various Sn loading were prepared by three different methods (impregnation, co-precipitation and single step sol-gel) and their catalytic activities for the selective reduction of NOx with propene were investigated. It was found that the catalyst preparation method as well as the Sn loading exerted a significant influence on the catalyst activity. Catalysts prepared by sol-gel method exhibited the highest activity toward NOx reduction and the optimal Sn loading is 5%. 5% SnO2/Al2O3 catalyst prepared by sol-gel method was found to be less inhibited by the presence of H20 than those prepared by other methods. Even in the co-presence of H2O and SO2, it still showed the highest activity. The increase of oxygen and propene concentration promotes the NOx reduction, respectively.
authors.affiliation: Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Zhi-ming
authors.initials: ZM
authors.lastname: Liu
authors.forename: Ji-ming
authors.initials: JM
authors.lastname: Hao
authors.forename: Li-xin
authors.initials: LX
authors.lastname: Fu
authors.forename: Jun-hua
authors.initials: JH
authors.lastname: Li
authors.forename: Xiang-yu
authors.initials: XY
authors.lastname: Cui
mesh_terms: D000475:Alkenes / Q000737:chemistry; D000537:Aluminum Oxide / Q000737:chemistry*; D002384:Catalysis; D009589:Nitrogen Oxides / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D014001:Tin / Q000737:chemistry*
chemical_list: D000475:Alkenes; D009589:Nitrogen Oxides; D014001:Tin; C013658:propylene; D000537:Aluminum Oxide; D010100:Oxygen