Patent ID: 8673806
Filing Date: 2014-03-18
Classification: B01J,C08F

Abstract:
1. An olefin polymerization catalyst comprising: (I) a clad catalyst support comprising (a) a core which comprises alumina particles and (b) about 1 to about 40 weight percent silica, based on the weight of said clad catalyst support, clad over the surface of said core; said clad catalyst support having a BET surface area of greater than 20 m (II) 0.1 to 10 weight percent, based on the weight of said catalyst, of catalytically active polymerization catalyst selected from elemental transition metal, transition metal compounds, or transition metal complexes, wherein said transition metal is selected form Fe, Cr, Ti, Zr, Hf, Ni, Mg, Pd, or mixtures thereof, immobilized to the surface of said clad catalyst support.