A study on the surface properties of ceria-supported tungsten and copper oxides

Article Abstract:

Issues concerning the characterization of WO3/CeO2 samples by the use of different types of spectroscopy are presented. It has been possible to determine the dispersion capacity of tungsten oxide.

Reflectance spectroscopy, Photoelectron spectroscopy, Fourier transform infrared spectroscopy, Copper oxide, Copper oxides

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Vibrational spectroscopy and normal-mode analysis of tungsten-methylidyne complexes

Article Abstract:

The Raman and infrared spectra are reported for the tungsten-methyldyne complex trans-W(triple bond CH) (PMe3)4CI and its deuterated isotopomers W(triple bond CD) (PMe3)4CI. The bands attributable to the vibrational modes of the W triple bond C-H fragment are clearly identified on the basis of their frequency shifts upon isotopic substitution.

Optical properties, Vibrational spectra, Chemical properties

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Layered tungsten oxide-based organic-inorganic hybrid materials: An infrared and Raman study

Article Abstract:

Tungsten oxide-organic layered hybrid materials are studied by infrared and Raman Spectroscopy and it is demonstrated that there is a difference in bond nature when the length of the interlayer organic spacer molecule is increased. Tungsten oxide-ethylenediamine displays a different bonding nature to the other hybrid materials in that it appears to rely only on hydrogen bonding, with no -NH(sub 3)(super +) ammonium groups to form electrostatic bonds.

Infrared spectroscopy

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