| Abstract: | The state of Pd in Pd/TiO2 and Pd/TiO2(Nb2O) systems is investigated by means of electron diffuse reflection spectroscopy, x-ray electron spectroscopy, and IR spectroscopy
of adsorbed CO as a function of thermal and reduction treatments. Modification of titanium dioxide TiO2 leads to intensification of metal-support interaction, which manifests itself as an increase in the content of surface complexes
of Pd strongly bound to TiO2. As a result of electron density transfer from TiO2 with electron-excess Ti3+ ions to the metal deposited, the latter acquires an enhanced reduction ability.
Institute of Physical and Organic Chemistry, National Academy of Sciences of Belarus, 13, Surganov St., Minsk, 220072, Belarus.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 66, No. 1, pp. 84–88 January–February, 1999. |
