Catalysis Letters

, Volume 12, Issue 1–3, pp 319–325 | Cite as

Electron spectroscopic study of adsorption of methane on titanium dioxide surfaces

  • Wang Fancheng
  • Wan Huilin
  • K. R. Tsai
  • Wang Shuiju
  • Xu Fuchun
Article

Abstract

The chemisorption of methane has been investigated on titanium surface, the polycrystalline TiO2 film surface and the TiO2(100) surface with and without defects (oxygen vacancies).

It has been found that the activation of C-H bonds depends on surface oxygen species. The different adsorption behavior between methane adsorption and methane-oxygen coadsorption, together with the different adsorption results on the TiO2(100) surface with and without defects, shows that the electrophilic oxygen species on the surface are active species for the activation of C-H bonds of methane. The temperature dependence of adlayer provides possible evidence for electrophilic oxygen species reacting with CHx on the surface.

Keywords

Chemisorption of methane titanium dioxide oxygen vacancy photoelectron spectroscopy adcarbon species adoxygen species 

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Copyright information

© J.C. Baltzer A.G. Scientific Publishing CompanyJ.C. Baltzer A.G. Scientific Publishing Company 1992

Authors and Affiliations

  • Wang Fancheng
    • 2
  • Wan Huilin
    • 2
  • K. R. Tsai
    • 2
  • Wang Shuiju
    • 2
    • 1
  • Xu Fuchun
    • 2
    • 1
  1. 1.Department of Analysis and Testing CenterXiamen UniversityXiamenP.R. China
  2. 2.Department of ChemistryXiamen UniversityXiamenP.R. China

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