Ethylene/1‐Hexene Copolymerization with A Novel SiO 2 ‐Supported Inorganic and Organic Hybrid Chromium‐based Catalyst

In this work, ethylene/1‐hexene copolymerization with a novel SiO 2 ‐supported inorganic and organic hybrid chromium‐based catalyst was investigated. This catalyst was prepared using the residual surface hydroxyl groups in Phillips catalyst to support bis(triphenylsilyl) chromate (BC) in order to get the merits from two important chromium‐based catalysts namely inorganic Phillips and organic S‐2 catalysts. The influences of addition amount of 1‐hexene and BC were systematically investigated. With increasing 1‐hexene from 0 to 7 vol%, the activity of HCat‐2 catalyst showed a decreasing tendency. Its copolymer also showed the better short chain branches distribution through the temperature rising elution fractionation cross successive self‐nucleation and annealing characterization. magnified image