Study of the supported zirconocene catalysts by means of UV/vis and DRIFT spectroscopy

Various types of the surface zirconocene species [(C) and (D) in the scheme below and [Me2Si(Ind)2ZrCl]+[MeMAO]− (E)] are identified in the supported catalysts Me2Si(Ind)2ZrX2/MAO/SiO2 (X = Cl, Me) by means of UV/vis in diffusion reflection mode (DRS) and DRIFT spectroscopy. It is shown the species of (D) type are formed only at the interaction of the supported catalysts with TIBA.