AVS 64th International Symposium & Exhibition
    Fundamental Discoveries in Heterogeneous Catalysis Focus Topic Thursday Sessions
       Session HC+SS-ThA

Paper HC+SS-ThA10
Calorimetric Energies of Small Adsorbates on Ni(111) and NiO(111) Surfaces, with Comparison to Pt(111) to Explain Differences in Catalytic Activity between Ni vs Pt

Thursday, November 2, 2017, 5:20 pm, Room 24

Session: Combined Experimental and Theoretical Explorations of the Dynamics of Heterogeneously Catalyzed Reactions
Presenter: Wei Zhao, University of Washington
Authors: W. Zhao, University of Washington
S. Carey, University of Washington
Z. Mao, University of Washington
S. Morgan, University of Washington
C. Campbell, University of Washington
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Catalysts based on nickel and nickel oxides are of great importance in chemical industry, such as methane steam reforming and biomass conversions. We present here calorimetric measurements of the energies of several catalytically relevant adsorbed intermediates on Ni(111), including methyl, bidentate formate, H2O, benzene and phenol, and also the enthalpies of H2O and HCOOH dissociative adsorption on NiO(111). We will also give an extensive comparison of these energies on Ni(111) to previous calorimetric measurements on Pt(111), providing the insight into the catalytic properties and reaction efficiency for these two metals. Besides the crucial importance of these measured energies for understanding related catalytic relations, they also provide important experimental benchmarks that can be used to improve the accuracy of the related quantum mechanical calculations.