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  • Polarized total reflection EXAFS  (1)
  • cobalt oxides on α-Al2O3(0001)  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Anisotropic structure analysis for cobalt oxides on α-Al2O3(0001) by polarized total-reflection fluorescence extended X-ray absorption fine structure (1992)
    Springer
    Catalysis letters 15 (1992), S. 247-254 
    Details
    ISSN: 1572-879X
    Keywords: Polarized total-reflection fluorescence EXAFS ; cobalt oxides on α-Al2O3(0001) ; anisotropic structure analysis ; oxidation catalyst model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Anisotropic structure analyses for [CoOx]/α-Al2O3 (0001) and [Co3O4]n /α-Al2O3 (0001) which were derived from Co2(CO)8/α-Al2O3 (0001) were performed by a polarized total-reflection fluorescence extended X-ray absorption fine structure (EXAFS) technique. Both s- and p-polarized EXAFS data revealed that the cobalt atoms of [CoOx] were located on three-fold hollow sites of α-Al2O3 (0001) in a monomer form and that a thin spinel structure [Co3O4] grew with the (001) plane parallel to α-Al2O3 (0001).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00765268
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  • 2
    Electronic Resource
    Electronic Resource
    Asymmetric structure analysis of active surface-sites by in situ polarized total-reflection fluorescence EXAFS (1993)
    Springer
    Catalysis letters 20 (1993), S. 117-124 
    Details
    ISSN: 1572-879X
    Keywords: Polarized total reflection EXAFS ; EXAFS of Cu on α-quartz ; EXAFS of cobalt oxide on α-alumina ; EXAFS of platinum on α-alumina
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract An in situ polarization-dependent total reflection fluorescence yield EXAFS system has been developed to analyze the asymmetric structures of catalytically active metal sites on single crystal surfaces. This technique separately reveals the bonding feature parallel and perpendicular to the support surface. The systems of Cu ion on α-quartz(0001), Co oxide on α-alumina(0001), and Pt4 on α-alumina(0001) were investigated as model surfaces of supported catalytic systems. The location of Cu sites on α-quartz(0001), the epitaxial growth mode of Co3O4 on α-alumina(0001), and the Pt raft structure with metal-support interaction in Pt4 / α-alumina(0001) were observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00772603
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