caa a22 4500 463252535 CHVBK 20180405153344.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10562-006-9003-7 doi (NATIONALLICENCE)springer-10.1007/s10562-006-9003-7 Insitu time-resolved characterization of novel Cu-MoO2 catalysts during the water-gas shift reaction [Elektronische Daten] [Wen Wen, Liu Jing, Michael White, Nebojsa Marinkovic, Jonathan Hanson, José Rodriguez] A novel and active Cu-MoO2 catalyst was synthesized by partial reduction of a precursor CuMoO4 mixed-metal oxide with CO or H2 at 200-250°C. The phase transformations of Cu-MoO2 during H2 reduction and the water-gas shift reaction could be followed by insitu time resolved XRD techniques. During the reduction process the diffraction pattern of the CuMoO4 collapsed and the copper metal lines were observed on an amorphous material background that was assigned to molybdenum oxides. During the first pass of water-gas shift (WGS) reaction, diffraction lines for Cu6Mo5O18 and MoO2 appeared around 350°Cand Cu6Mo5O18 was further transformed to Cu/MoO2 at higher temperature. During subsequent passes, significant WGS catalytic activity was observed with relatively stable plateaus in product formation around 350, 400 and 500°C. The interfacial interactions between Cu clusters and MoO2 increased the water-gas shift catalytic activities at 350 and 400°C. Springer Science+Business Media, LLC, 2007 water-gas shift nationallicence copper nationallicence molybdenum oxides nationallicence CuMoO4 nationallicence H2 nationallicence water nationallicence CO nationallicence CO2 nationallicence X-ray diffraction nationallicence X-ray absorption spectroscopy nationallicence Wen Wen Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut Jing Liu Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut White Michael Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut Marinkovic Nebojsa Department of Chemical Engineering, University of Delaware, 19716, Newark, DE, USA aut Hanson Jonathan Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut Rodriguez José Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 113/1-2(2007-01-01), 1-6 1011-372X 113:1-2<1 2007 113 10562 https://doi.org/10.1007/s10562-006-9003-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-006-9003-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wen Wen Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut NATIONALLICENCE 700 1- Jing Liu Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut NATIONALLICENCE 700 1- White Michael Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut NATIONALLICENCE 700 1- Marinkovic Nebojsa Department of Chemical Engineering, University of Delaware, 19716, Newark, DE, USA aut NATIONALLICENCE 700 1- Hanson Jonathan Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut NATIONALLICENCE 700 1- Rodriguez José Chemistry Department, Brookhaven National Laboratory, 11973, Upton, NY, USA aut NATIONALLICENCE 773 0- Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 113/1-2(2007-01-01), 1-6 1011-372X 113:1-2<1 2007 113 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer