Novel zirconocene hydride complexes in homogeneous and in SiO 2 -supported olefin-polymerization catalysts modified with diisobutylaluminum hydride or triisobutylaluminum

Babushkin, Dmitrii E.; Panchenko, Valentina N.; Timofeeva, Maria N.; Zakharov, Vladimir A.; Brintzinger, Hans-Herbert

Novel zirconocene hydride complexes in homogeneous and in SiO 2 -supported olefin-polymerization catalysts modified with diisobutylaluminum hydride or triisobutylaluminum

Dateien

Babushkin_236669.pdfGröße: 5.01 MBDownloads: 663

Datum

2008

Autor:innen

Babushkin, Dmitrii E.

Panchenko, Valentina N.

Timofeeva, Maria N.

Zakharov, Vladimir A.

Brintzinger, Hans-Herbert

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Chemie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Macromolecular Chemistry and Physics. 2008, 209(12), pp. 1210-1219. ISSN 1022-1352. eISSN 1521-3935. Available under: doi: 10.1002/macp.200800084

Zusammenfassung

Reactive species in SiO₂-supported, zirconocene-based olefin-polymerization catalysts have been characterized by comparison of their UV-vis spectra with those of related, NMR-spectroscopically identified catalyst species in homogeneous solution. Neutral zirconocene dihydride complexes are found to arise in hydrocarbon solutions as well as on SiO₂ supports when catalyst systems that contain rac-Me₂Si(ind)₂ZrCl₂ and methylaluminoxane (MAO) are modified by addition of diisobutylaluminum hydride or triisobutylaluminum. These complexes, tentatively formulated as adducts with Lewis-acidic alkylaluminum species AlR2X, rac-Me₂Si(ind)₂ZrH₂ · {nAlR2X}, are reconverted into the initial reactive zirconocene cations upon addition of isobutene to these reaction systems.

Fachgebiet (DDC)

540 Chemie

Schlagwörter

MAO activation, metallocene catalysts, olefin polymerization, polyolefins, SiO2 support

Zitieren

ISO 690

BABUSHKIN, Dmitrii E., Valentina N. PANCHENKO, Maria N. TIMOFEEVA, Vladimir A. ZAKHAROV, Hans-Herbert BRINTZINGER, 2008. Novel zirconocene hydride complexes in homogeneous and in SiO 2 -supported olefin-polymerization catalysts modified with diisobutylaluminum hydride or triisobutylaluminum. In: Macromolecular Chemistry and Physics. 2008, 209(12), pp. 1210-1219. ISSN 1022-1352. eISSN 1521-3935. Available under: doi: 10.1002/macp.200800084

BibTex

@article{Babushkin2008Novel-23666,
  year={2008},
  doi={10.1002/macp.200800084},
  title={Novel zirconocene hydride complexes in homogeneous and in SiO 2 -supported olefin-polymerization catalysts modified with diisobutylaluminum hydride or triisobutylaluminum},
  number={12},
  volume={209},
  issn={1022-1352},
  journal={Macromolecular Chemistry and Physics},
  pages={1210--1219},
  author={Babushkin, Dmitrii E. and Panchenko, Valentina N. and Timofeeva, Maria N. and Zakharov, Vladimir A. and Brintzinger, Hans-Herbert}
}

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