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Kinetic and morphological study of a magnesium ethoxide-based Ziegler-Natta catalyst for propylene polymerization

Dashti, A ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1002/pi.2490
  3. Publisher: 2009
  4. Abstract:
  5. Background: Kinetic andmorphological aspects of slurry propylene polymerization using a MgCl2-supported Ziegler-Natta catalyst synthesized from a Mg(OEt)2 precursor are investigated in comparison with a ball-milled Ziegler-Natta catalyst. Results: The two types of catalyst show completely different polymerization profiles: mild activation and long-standing activity with good replication of the catalyst particles for the Mg(OEt)2-based catalyst, and rapid activation and deactivation with severe fragmentation of the catalyst particles for the ball-milled catalyst. The observed differences are discussed in relation to spatial distribution of TiCl4 on the outermost part and inside of the catalyst particles. Conclusion: The Mg(OEt)2-based Ziegler-Natta catalyst is believed to show highly stable polymerization activity and good replication because of the uniform titanium distribution all over the catalyst particles. © 2008 Society of Chemical Industry
  6. Keywords:
  7. Ziegler-Natta propylene polymerization ; Ball-milled ; Catalyst particles ; Ethoxide ; Mg(OEt)2-based catalyst ; Morphological studies ; Polymerization activities ; Rapid activations ; Spatial distributions ; Titanium distributions ; Ziegler-Natta catalysts ; Catalysis ; Magnesium ; Monomers ; Polymerization ; Polymers ; Propylene ; Size distribution ; Titanium ; Catalyst deactivation ; Catalyst ; Inorganic compound ; Kinetics ; Morphology ; Synthesis
  8. Source: Polymer International ; Volume 58, Issue 1 , 2009 , Pages 40-45 ; 09598103 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/full/10.1002/pi.2490