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Oxidation of Cl-modified Ag(111) under UHV conditions and ethylene adsorption on the oxidized surface

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Abstract

Oxidation of Cl-modified Ag(111) under UHV conditions was investigated using AES, ISS and HREELS. The results showed that Cl-modified Ag(111) can be easily oxidized at 550 K by 1 × 10−6 mbar oxygen which was also heated to 550 K. With HREELS two fundamental vibrations at 600 and 1000 cm−1 were detected for silver oxide and the multiple losses and combination excitations as well. Ethylene adsorption on the oxide was analyzed by HREELS. Surface hydroxyl species was formed at 230 K and stable to above 300 K, which is attributed to silver oxide. Ethylidyne was suggested to form concurrently with hydroxyl species.

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Authors and Affiliations

  1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, PO Box 110, 116023, Dalian, PR China

    Kai Wu, Xuming Wei, Yuming Cao, Dezheng Wang & Xiexian Guo

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  1. Kai Wu
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  2. Xuming Wei
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  3. Yuming Cao
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  4. Dezheng Wang
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  5. Xiexian Guo
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Wu, K., Wei, X., Cao, Y. et al. Oxidation of Cl-modified Ag(111) under UHV conditions and ethylene adsorption on the oxidized surface. Catal Lett 26, 109–121 (1994). https://doi.org/10.1007/BF00824037

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  • DOI: https://doi.org/10.1007/BF00824037

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