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Study of the composition and morphology of new modifications of titanium‐magnesium catalysts with improved properties in ethylene polymerization
Authors:Tatiana B Mikenas  Evgeny I Koshevoy  Svetlana V Cherepanova  Vladimir A Zakharov
Institution:1. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia;2. Novosibirsk State University, Novosibirsk, Russia
Abstract:Data on new modifications of supported titanium‐magnesium catalysts (TMCs) with improved performance in ethylene polymerization are reported. These catalysts possess a high and stable activity, an enhanced ability to regulate molecular weight of the polymer by hydrogen, a controllable particle size at a narrow particle size distribution, and the ability to produce the polymer with an increased bulk density. Various physicochemical methods were used to obtain data on the chemical composition of novel supports and catalysts, their phase composition and crystal structure as well as the pore structure. The results obtained were used to discuss possible correlations between composition and structure of TMCs and their catalytic properties. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54, 2545–2558
Keywords:crystal structures  polyethylene (PE)  pore structure  structure‐property relations  Ziegler‐Natta polymerization
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