XAFS study on the structure of Mo species in NaY zeolite derived from Mo(CO)(6)

We carried out XAFS characterization on Mo species in the supercage which w as prepared in the supercage of NaY zeolite by cycles of saturation adsorpt ion of Mo(CO)(6) at room temperature and subsequent thermal decomposition a t 573 K. XAFS analysis revealed that Mo dimer with the Mo-Mo distance of 0. 285 nm was formed in the supercage, the structure of which was unchanged du ring the saturation adsorption/thermal decomposition cycles.