III International Conference

PP-III-21According to the XPS data the films composition is essentially inhomogeneous on thethickness. Titanium is absent on the surface, there is carbidous carbon. After catalytic testnickel and copper concentrations increase on the surface, the portion of Cu 2+ in respect of Cu +increases. It is possible that changes in the catalytic activity are related with the surfacecomposition changes.The second approach. The films on aluminium have been formed in electrolytessuspensions, for example, in electrolyte containing Na 3 PO 4 + Na 2 B 4 O 7 + Na 2 WO 4 (PBW), inwhich acetates of nickel(II) and copper(II) have been added. The temperature dependences ofCO conversion into CO 2 for compositions Al/Ni- and Cu-containing films (a), and results ofthe cycling catalytic test of the system PBW/NiCu (b) are given in Fig. 3. According to theXPS data the surface composition of the system PBW/NiCu is practically invariable undercatalytic test, Fig.3c.Рис. 3. CO oxidation under the catalysts (a, b) and the surface composition (c) of systemsAl/NiCu-containing film.Thus the compositions Ti/NiCu-film and Al/NiCu-film reveal the certain catalyticactivity in CO oxidation into CO 2 . CO conversion correlates with the surface chemicalcomposition. Present compositions may be recommended both as support and catalyst systemfor redox reactions.The researches are supported by grants of RFFR N 06-03-32184 and of FEB RAS N 06-1-П8-012, 06-01-ОХНМ-137.508