Formation of Isolated Titanium(III) Ions as Active Sites of Supported Titanium-Magnesium Catalysts for Polymerization of Olefins

Electron spin resonance (ESR) studies reveal a high yield of isolated Ti3+ compounds (30–70% of the total titanium content) that form in superactive supported titanium–magnesium catalysts (TMCs) of composition TiCl4/MgCl2 with a low titanium content (≤0.1 wt%) after their interaction with different...

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Veröffentlicht in:	Macromolecular chemistry and physics 2014-09, Vol.215 (18), p.1707-1720
Hauptverfasser:	Mikenas, Tatiana B., Koshevoy, Evgeny I., Zakharov, Vladimir A., Nikolaeva, Marina I.
Format:	Artikel
Sprache:	eng
Schlagworte:	Catalysis Catalysts Correlation Electron spin resonance Electrons Ethylene Magnesium Olefins polyethylene Polymerization polypropylene Polypropylenes Titanium Ziegler-Natta polymerization
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