Operando studies of working catalysts: Surface spectroscopy and microscopy

  • [2018-06-25]

    Speaker: Prof. Günther Rupprechter, Technische University Wien, Austria
    Time: 2018-06-25
    Place: 3#210, National Synchrotron Radiatinon Laboratory
    Detail: Abstract
    A central theme is to examine active functioning catalysts under operating conditions, at near atmospheric pressure (NAP) and elevated temperature, applying operando surface spectroscopy, such as Fourier transform infrared spectroscopy (FTIR), X-ray absorption spectroscopy (XAS), X-ray photoelectron spectroscopy (NAP-XPS), and X-ray diffraction (XRD). For model catalysts, analogous operando studies are performed by sum frequency generation (SFG) laser spectroscopy, polarization-modulation infrared reflection absorption spectroscopy (PM-IRAS) and NAP-XPS. To image surface reactions by in situ surface microscopy, photoemission electron microscopy (PEEM) is applied to polycrystalline and powder samples. Most operando studies are performed at synchrotron sources and in lock-step with theory.The presentation will give a short insight into most recent operando studies: spectroscopy on commercial Co3O4 and perovskite surfaces, as well as microscopy on model Pd/ZrO2.
    Dr. Günther Rupprechter is a Full Professorship in Surface and Interface Chemistry at Technische Universität Wien and a member of the Austrian Academy of Sciences. He is the Vice-Chair of the Austrian Catalysis Society, Speaker of the FWF Special Research Program (SFB) “Functional Oxide Surfaces and Interfaces (FOXSI)”, as well as Editorial Board Member of “Catalysis Letters” and “Topics in Catalysis”. His research emphasis is on heterogeneous catalysis, particularly in situ (operando) spectroscopy/microscopy on model and technological catalysts. He received many awards including the Jochen Block Award of the German Catalysis Society for “the application of surface science methods to heterogeneous catalysis”.
    Organizer: National Synchrotron Radiation Laboratory



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