Surface nano-size structures have been obtained by supporting on oxide supp
orts (SiO2, MgO, Al2O3) some cluster carbonyls of Os, Fe, Fe-Rh and by thei
r following thermal conversions. Surface species were characterized by IR-s
pectroscopy, high-resolution TEM, XPS, Mossbauer spectroscopy and temperatu
re-programmed desorption technique. Their catalytic properties was studied
in CO hydrogenation reaction.