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General Chemistry

Special Issue: Ethylene Polymerization

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Paradox of Late Transition-Metal Catalysts in Ethylene Polymerization

Badral Gansukh,a,b Randi Zhang,a,b Jingjing Guo,c Wenjuan Zhang*,a,c and Wen-Hua Sun*,a,b   

  1. a Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
    b CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
    c Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
    d State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
  • Received:2019-11-09 Revised:2019-12-01 Online:2020-03-29
  • Contact: zhangwj@bift.edu.cn (W. Z.), whsun@iccas.ac.cn (W. H. S.)
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos. 51473170 and 21871275). B. G. is grateful to the CAS-TWAS President’s fellowship.

Abstract: Polyolefin materials are the most synthesized polymer used nowadays and symbolize the development level of the national petrochemical industry, in which polyethylenes are major along with alternative product α-olefins for co-monomer and substrates for fine chemicals. Likely operating catalysts such as Ziegler-Natta and metallocene meet all demanding of various polyethylene materials, what is any business in developing late-transition metal catalysts for ethylene reactivity? In the past two decades, we realized the advantages of late-transition metal catalysts, such as easy variousness and easy preparation, good stability and high catalytic activity. Besides these, the characteristic different polyethylenes have been achieved as either highly linear polyethylene or highly branched polyethylenes. Therefore, there are some spaces in developing new catalytic system on the base of late-transition metal catalysts to compromise the demanding for new polyethylenes from sole ethylene polymerization.

 

Key words: homogeneous catalysis, N ligands, ligand effects, polymerization, polymers

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