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Surface chemistry of selected supported metallocene catalysts studied by DR‐FTIR, CPMAS NMR, and XPS techniques

Two supported metallocene catalysts (CS 1: PQ 3030/MAO/Cp2ZrCl2 and CS 2: PQ 3030‐BuGeCl3/MAO/Cp2 ZrCl2) were prepared by sequentially loading MAO and Cp2ZrCl2 on partially dehydroxylated silica PQ 3030. In catalyst CS 2, nBuGeCl3 was used to functionalize the silica. These catalysts were characterized by DR‐FTIR spectroscopy, CPMAS NMR spectroscopy, and XPS. Their catalytic performance was evaluated by polymerizing ethylene using the MAO cocatalyst and characterizing the resulting polymers by GPC.