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- W2950872059 abstract "Abstract X-ray photoelectron spectroscopy and ion scattering spectroscopy are employed to study well-defined mixed valence oxides of tungsten and an operational alkene isomerisation catalyst, consisting of alumina-supported tungsten trioxide which is partially reduced by preconditioning in hydrogen saturated in water vapour. Both γ-alumina and γ-alumina partially transformed to α-alumina by heating are used as catalyst supports. In both cases it is found that the tungsten trioxide interacts with the alumina to form an irreducible surface species in which the tungsten is tetrahedrally coordinated. Sodium impurities in the alumina appear to assist the reaction. Catalysis takes place on the partially reduced tungsten oxide species which is stabilised by a weak interaction with the alumina. The heat-treated alumina is a better catalyst support because, for equivalent loadings, its smaller surface area leaves more free tungsten trioxide for reduction and subsequent catalytic activity." @default.
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- W2950872059 date "1988-06-28" @default.
- W2950872059 modified "2023-09-27" @default.
- W2950872059 title "ChemInform Abstract: X-Ray Photoelectron and Ion Scattering Studies of Tungsten Oxides and Tungsten Oxide Catalysts" @default.
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- W2950872059 doi "https://doi.org/10.1002/chin.198826025" @default.
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