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Reaction Kinetics, Mechanisms and Catalysis

, Volume 119, Issue 2, pp 481–490 | Cite as

Silane-bridged diphosphine ligands for nickel-catalyzed ethylene oligomerization

  • XueJiao Meng
  • Le Zhang
  • YanHui Chen
  • Tao Jiang
Article

Abstract

In this study, bis(diphenyl phosphine) dimethyl silane (L1), bis(diphenyl phosphine) methyl dimethyl silane (L2), bis(diphenyl phosphine methyl) dimethyl silane (L3) and their nickel (II) halide complexes, L1/NiBr2 (C1), L2/NiBr2 (C2), L3/NiBr2 (C3), were synthesized and characterized. The X-ray single-crystal analysis of C3 complex showed bidentate coordination on the Ni center. In combination with methylaluminoxane as co-catalyst, these complexes produced catalytic systems for ethylene dimerization to butylene with catalytic activities of up to 3.12 × 106 g mol−1 (cat.) h−1 and selectivities up to 97.6 %. With the fine-tuned ligand backbone, such a PSiP-based catalyst system provides a model for precise understanding of the impact of ligand variations on catalytic performance.

Keywords

Ethylene dimerization 1-Butylene Nickel complexes Methylaluminoxane (MAO) 

Notes

Acknowledgments

This study was supported by the National Natural Science Foundation of China (U1162114), Program for New Century Excellent Talents in University (NCET-07-0142) and the Provincial Key Laboratory of Oil & Gas Chemical Technology (HXHG2012-04).

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2016

Authors and Affiliations

  • XueJiao Meng
    • 1
  • Le Zhang
    • 1
  • YanHui Chen
    • 1
  • Tao Jiang
    • 1
  1. 1.College of Chemical Engineering and Material ScienceTianjin University of Science and TechnologyTianjinChina

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