A flat model approach to tethered bis(imino)pyridyl iron ethylene polymerization catalysts

W. Han, J.W. Niemantsverdriet, P.C. Thune

Research output: Contribution to journalArticleAcademic

1 Citation (Scopus)

Abstract

A surface science model for a silica supported bis(imino)pyridyl iron complexes is applied to reveal the surface chemistry of these heterogeneous polymerization catalysts. The polymerization activity of these models and the molecular weight distribution of the resulting polymer are comparable to similar catalysts supported on amorphous silica. The catalyst deactivates partially during the first hour of ethylene polymerization. Based on photoelectron spectroscopy (XPS) we attribute this deactivation to iron extrusion by the aluminium alkyl activator.
Original languageEnglish
Pages (from-to)147-153
Number of pages7
JournalMacromolecular Symposia
Volume260
Issue number1
DOIs
Publication statusPublished - 2007

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