Abstract
A metallocene/MAO-based solid olefin polymerization catalyst has been developed using chemically functionalized nanoparticles (carboxylate-alumoxanes) as a well-defined substrate. Reaction of p-hydroxybenzoate-alumoxane (p-HB-A) nanoparticles, formed from the acid with boehmite, with methylalumoxane (MAO) results in a solid nanoparticle-based MAO (n-MAO), which in combination with zirconocenes [including Cp 2 ZrCl 2 , Cp 2 ZrMe 2 , and ( n BuCp) 2 ZrCl 2 ] produces an active solid catalyst for olefin polymerization. The catalytic activity of the n-MAO-based catalyst is comparable to the homogeneous analogue and a traditional silica-supported catalyst under identical reaction conditions and with the same Al (MAO) :Zr ratio. The n-MAO approach offers the potential of the MAO being easily chemically modified.
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