Research Progress of Olefin Polymerization Catalysts

doi:10.19894/j.issn.1000-0518.210170

Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (3): 355-373.DOI: 10.19894/j.issn.1000-0518.210170

• Review • Next Articles

Research Progress of Olefin Polymerization Catalysts

Di XU, Li DAI(), Wen-Zhi YAO, Guang-Rui YANG, Hai-Rong WANG, Peng-Fei SONG, Yan-Song ZHU

School of Environmental and Municipal Engineering，North China University ofWater Resources and Electric Power，Zhengzhou 450046，China

Received:2021-04-06 Accepted:2021-08-13 Published:2022-03-01 Online:2022-03-15
Contact: Li DAI
About author:daili@ncwu.edu.cn
Supported by:
the Natural Science Foundation of Henan Province(202300410273);the Key Scientific Research Projects of Colleges and Universities in Henan Province(21A150031);the High?level Talent Launch Project of North China University of Water Resources and Electric Power(4001/40590)

Abstract

Abstract:

It is a constant pursuit of chemists to get high-performance polyolefin materials. The structure of the olefin polymerization catalyst plays a crucial role on its catalytic performance. Meanwhile， the defects in polyolefin applications highly depend on their structure modifications， e.g. the toughness of polymer can be increased， the friction coefficient of polymer surface can be reduced or the surface energy can be increased by modification. This review summarizes the research progress of metal olefin polymerization catalysts， including Ziegler-Natta catalysts， metallocene catalysts， non-metallocene catalysts and control strategies. The effects of steric hindrance， bimetallic synergism and fluorine effect of these catalysts are discussed.

Key words: Olefin catalysts, Ziegler-Natta catalysts, Metallocene catalysts, Non-metallocene catalysts, Steric hindrance effect, Synergism effect

CLC Number:

O632.1

Di XU, Li DAI, Wen-Zhi YAO, Guang-Rui YANG, Hai-Rong WANG, Peng-Fei SONG, Yan-Song ZHU. Research Progress of Olefin Polymerization Catalysts[J]. Chinese Journal of Applied Chemistry, 2022, 39(3): 355-373.

Figures/Tables 32

Fig.1 Development of metal catalysts for olefin polymerization

Fig.2 Two conformations of bridgeless metallocene catalysts and their catalytic properties for propylene polymerization［29］

Fig.3 Mechanism of random epimerization of active sites in synthesis of stereoblock polypropylene［31］

Fig.4 Geometrically restricted double titanium catalyst and its application in styrene polymerization［33］

Fig.5 Ti/Zr bimetallic catalyst［34］

Fig.6 Structure of salicylaldehyde imine complex catalyst

Fig.7 Vanadium complexes containing pyridylimine（amine） ancillary ligands［36］

Fig.8 Structure of typical post transition metal catalysts

Fig.9 Salicylaldehyde imine nickel catalysts and double ligand complexes［13，38］

Fig.10 Brookhart-type catalysts with high steric hindrance［39-42］

Fig.11 Catalysts containing azacarbene［44-45］

Fig.12 Self supported catalysts［47］

Fig.13 Ti-C n -CrSNS catalyst［50］

Fig.14 Methylene bridging α- Diimine double nickel catalysts［51-52］

Fig.15 Double nickel catalysts for mutual generation of electrons and steric hindrance［54］

Fig.16 Double nickel catalysts with different steric hindrance［55］

Fig.17 Different configuration of double nickel catalysts［56-57］

Fig.18 Nickel catalyst of salicylaldehyde imides with alkali metal ions［58］

Fig.19 Copolymerization of ethylene and diene catalyzed by double titanium catalyst［59］

Fig.20 Salicylaldehyde imine double nickel catalyst［60］

Fig.21 Synergistic effect and fluorination effect in salicylaldehyde imine double nickel catalysts for ethylene polymerization［61］

Fig.22 Steric hindrance effect of salicylaldehyde imine single nickel catalyst with oxanthrene framework［62］

Fig.23 Chain shuttling polymerization［63］

Fig.24 Rigid asymmetric ligand double nickel catalyst［64］

Fig.25 Fluorination catalysts with different positions of imino aryl group［72］

Fig.26 C—H···F—C interaction［73-74］

Fig.27 M···F or H···F effect catalysts［75，82］

Fig.28 Examples of fluorine effect catalysts［83-84］

Fig.29 Transformation of neutral and oxidized states of Ti-salen complex［85］

Fig.30 Catalysts for redox regulation reported by Diaconescu and Byers［86，89］

Fig.31 Olefin polymerization catalysts containing ferrocenyl group［91，93］

Fig.32 Olefin polymerization catalyst with redox control effect［94，97］

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Research Progress of Olefin Polymerization Catalysts

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