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Water-induced effects on the adsorption on polycrystalline platinum (II. Interaction of carbon monoxide and water)

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Abstract

The adsorption and desorption of carbon monoxide and water as well as interaction between them on polycrystalline platinum has been studied using the technique of thermal desorption spectroscopy (TDS) under ultrahigh vacuum (UHV) conditions. A small amount of water adsorbs on the surface of the platinum at 310K and desorbs readily and steadily in the temperature range of 350-450 K. When exposure of water by more than 100 L is followed by saturation exposure of carbon monoxide, the height of carbon monoxide desorption peak appeared at 790 K becomes higher. It suggests that preadsorbed water dissociates a small part of carbon monoxide to atomic carbon and oxygen on the surface of the sample. And, interaction of water and carbon monoxide (or atomic carbon) results in the water-gas shift reaction.

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Authors and Affiliations

  1. Department of Chemical Technology, College of Engineering, Seoul National University, 151, Seoul, Korea

    Youn Seok Park, Wha Young Lee & Ho-In Lee

  2. Department of Chemical Engineering, College of Engineering, Seoul National University, 151, Seoul, Korea

    Wha Young Lee

Authors
  1. Youn Seok Park
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  2. Wha Young Lee
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  3. Ho-In Lee
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Park, Y.S., Lee, W.Y. & Lee, HI. Water-induced effects on the adsorption on polycrystalline platinum (II. Interaction of carbon monoxide and water). Korean J. Chem. Eng. 2, 75–80 (1985). https://doi.org/10.1007/BF02697553

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  • DOI: https://doi.org/10.1007/BF02697553

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