caa a22 4500 463253485 CHVBK 20180405153347.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10562-007-9155-0 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9155-0 Water-Gas Shift Reaction Over Aluminum Promoted Cu/CeO2 Nanocatalysts Characterized by XRD, BET, TPR and Cyclic Voltammetry (CV) [Elektronische Daten] [Lei Li, Yingying Zhan, Qi Zheng, Yuanhui Zheng, Xingyi Lin, Dalin Li, Junjiang Zhu] A series of aluminum promoted Cu/CeO2 nanocatalysts with aluminum content in the range of 0-5wt.% were prepared by co-precipitation method and examined with respect to their catalytic performance for the water-gas shift (WGS) reaction. The catalysts were characterized by XRD, BET, H2-TPR and cyclic voltammetry (CV) techniques. The results indicate that catalytic activity increases with the aluminum content at first, but then decreases with the further increase of aluminum content. Hereinto, Cu/CeO2 catalyst doped with 1 wt.% of aluminum shows the highest catalytic activity (CO conversion reaches 84.4% at 200°C) and thermal stability for WGS reaction. Correlation to the results from above characterization, it is found that the variation of catalytic activity is in very agreement with that of the surface area, the area of peak γ (i.e., the reduction of surface copper oxide (crystalline forms) interacted with surface oxygen vacancies on ceria), and the area of peak C2 and $$\hbox{A}_{1} (\hbox{Cu}^{0}\,\leftrightarrow\,\hbox{Cu}^{2+}$$ in cyclic voltammetry process), respectively. Enough evidence was found for the fact that the metallic copper (Cu0) interacted with surface oxygen vacancies on ceria is the active site for WGS reaction over Cu/CeO2 catalysts. Springer Science+Business Media, LLC, 2007 Cu/CeO2 catalyst nationallicence Water-gas shift nationallicence Aluminum nationallicence Active site nationallicence Cyclic voltammetry (CV) nationallicence Li Lei National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut Zhan Yingying National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut Zheng Qi National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut Zheng Yuanhui National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut Lin Xingyi National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut Li Dalin National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut Zhu Junjiang National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut Catalysis Letters Springer US; http://www.springer-ny.com 118/1-2(2007-10-01), 91-97 1011-372X 118:1-2<91 2007 118 10562 https://doi.org/10.1007/s10562-007-9155-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9155-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Lei National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut NATIONALLICENCE 700 1- Zhan Yingying National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut NATIONALLICENCE 700 1- Zheng Qi National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut NATIONALLICENCE 700 1- Zheng Yuanhui National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut NATIONALLICENCE 700 1- Lin Xingyi National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut NATIONALLICENCE 700 1- Li Dalin National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut NATIONALLICENCE 700 1- Zhu Junjiang National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, 350002, Fuzhou, P.R. China aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 118/1-2(2007-10-01), 91-97 1011-372X 118:1-2<91 2007 118 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer