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Brazilian Mineral Clay as Support for Metallocene Catalyst in the Synthesis of Polyethylene

Maria Marques and Rodrigo Tiosso
Affiliation: 
Instituto de Macromoleculas Professora Eloisa Mano/UFRJ Caixa Postal 68525, 21941-590 Rio de Janeiro fmarques@ima.ufrj.br
DOI: 
https://doi.org/10.23939/chcht04.02.139
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Keywords:

Abstract: 
Silica was compared with clays as supports for metallocene. Ethylene homopolymerization with both homogeneous and heterogeneous catalysts was performed. Activation energy was higher for (n-BuCp)2ZrCl2/SiO2/MAO, although high activities were obtained for catalysts with clay. They showed Ea close to that of homogeneous precursor. Catalyst/clay control polymer morphology until 363 K
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