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Boles of low-coordinated surface ions in adsorption of gases on MgO

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Il Nuovo Cimento D

Summary

MgO is a typical base catalyst and its basicity has been thought to arise from surface O2- lc (LC: low coordination). On the other hand, the roles of Mg2 lc in LC state in catalysis and adsorption have been often underestimated. In this study simple gases such as H2, CH4, CO, and CO2 were used as test molecules to examine the roles of both ions in adsorption, especially at low temperatures. Infrared and TPD spectroscopic observations and, partly, MO calculations for these adsorption systems indicated that Mg2+ Lc plays rather more important roles than O2- lc in the adsorption of these gases. Dynamic behavior of adsorbed species at low temperatures is also found.

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Author information

Authors and Affiliations

  1. Department of Environmental Science, Otsuma Women’s University Karakida, 206, Tama, Tokyo, Japan

    T. Ito

  2. Department of Chemical Technology, Kurashiki University of Science and the Arts Tsurajima, 712, Kurashiki, Okayama, Japan

    H. Kobayashi

  3. Hachioji Technical High School — Sen’nin-cho, 193, Hachioji, Tokyo, Japan

    T. Tashiro

Authors
  1. T. Ito
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  2. H. Kobayashi
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  3. T. Tashiro
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Ito, T., Kobayashi, H. & Tashiro, T. Boles of low-coordinated surface ions in adsorption of gases on MgO. Nouv Cim D 19, 1695–1705 (1997). https://doi.org/10.1007/BF03185365

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  • DOI: https://doi.org/10.1007/BF03185365

PACS 82.65.Jv

PACS 01.30.Cc

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