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Chinese Journal of Polymer Science

, Volume 37, Issue 10, pp 1031–1038 | Cite as

Activity Enhancement of MgCl2-supported Ziegler-Natta Catalysts by Lewis-acid Pre-treatment for Ethylene Polymerization

  • Matthieu Humbert
  • Sébastien Norsic
  • Jean RaynaudEmail author
  • Vincent MonteilEmail author
Article
  • 8 Downloads

Abstract

Ziegler-Natta precatalysts were synthetized from Lewis-base-modified-MgCl2 supports and treated by various Lewis acids, prior to activation by triethylaluminum, in order to increase their activity in ethylene polymerization. BCl3 provided the highest increase in activity. Interestingly, polymerization results showed no substantial modification of polymer properties, which is consistent with that Lewis acid only promotes the creation of new active sites, after activation by TEA, possessing very similar features to the original ones achievable with conventional precatalysts (i.e. without Lewis-acid treatment).

Keywords

Ziegler-Natta catalysis Ethylene polymerization Heterogeneous catalysis Lewis acids 

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Copyright information

© Chinese Chemical Society Institute of Chemistry, Chinese Academy of Sciences Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.UMR 5265 Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2)Université de Lyon, Univ. Lyon 1, CPE Lyon, CNRSVilleurbanneFrance

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