title: Surface structure and catalytic properties of MoO3/CeO2 and CuO/MoO3/CeO2.
abstract: XRD, LRS, TPR and in situ NH(3) adsorption FT-IR were used to investigate the dispersion state of the copper oxide and molybdena species of MoO(3)/CeO(2) and CuO/MoO(3)/CeO(2) catalysts as well as their surface acidity. The results showed that the molybdena monolayer modification promoted the dispersion of CuO due to the formation of new tetrahedral vacancies. Meanwhile, CuO changed the structure of molybdenum species and then influenced the surface acidity of the samples. A detail discussion about the possible model of the surface structure of the catalyst was presented. In addition, combining with the in situ NH(3) adsorption FT-IR, the relationships between the activities for ''NO + NH(3) + O(2)'' reaction and surface acid properties (Brønsted and Lewis acid sites) of the catalysts were discussed.
authors.affiliation: Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China.
authors.forename: Wujiang
authors.initials: W
authors.lastname: Yu
authors.forename: Jie
authors.initials: J
authors.lastname: Zhu
authors.forename: Lei
authors.initials: L
authors.lastname: Qi
authors.forename: Chuanzhi
authors.initials: C
authors.lastname: Sun
authors.forename: Fei
authors.initials: F
authors.lastname: Gao
authors.forename: Lin
authors.initials: L
authors.lastname: Dong
authors.forename: Yi
authors.initials: Y
authors.lastname: Chen