FOLLOWUS
a.Key Laboratory of Advanced Structural Materials, Ministry of Education, School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China
b.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
yxzhang7@ciac.ac.cn (Y.X.Z.)
yuechi@ccut.edu.cn (Y.C.)
zbjian@ciac.ac.cn (Z.B.J.)
Published:01 August 2024,
Published Online:05 June 2024,
Received:24 March 2024,
Revised:17 April 2024,
Accepted:18 April 2024
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Ji, H. Y.; Mu, H. L.; Tang, C. F.; Zhang, Y. X.; Chi, Y.; Jian, Z. B. Concerted steric and electronic strategy in thermostable salicylaldiminato nickel catalysts for ethylene (co)polymerization. Chinese J. Polym. Sci. 2024, 42, 1085–1092
Hong-Yu Ji, Hong-Liang Mu, Chun-Feng Tang, et al. Concerted Steric and Electronic Strategy in Thermostable Salicylaldiminato Nickel Catalysts for Ethylene (Co)polymerization. [J]. Chinese Journal of Polymer Science 42(8):1085-1092(2024)
Ji, H. Y.; Mu, H. L.; Tang, C. F.; Zhang, Y. X.; Chi, Y.; Jian, Z. B. Concerted steric and electronic strategy in thermostable salicylaldiminato nickel catalysts for ethylene (co)polymerization. Chinese J. Polym. Sci. 2024, 42, 1085–1092 DOI: 10.1007/s10118-024-3148-y.
Hong-Yu Ji, Hong-Liang Mu, Chun-Feng Tang, et al. Concerted Steric and Electronic Strategy in Thermostable Salicylaldiminato Nickel Catalysts for Ethylene (Co)polymerization. [J]. Chinese Journal of Polymer Science 42(8):1085-1092(2024) DOI: 10.1007/s10118-024-3148-y.
Concerted steric and electronic strategy in neutral Ni(II) catalysts enables the enhancement of thermostability in ethylene (co)polymerization
thus producing semicrystalline PE
PE wax
PE oil
and functional PE.
Olefin polymerization is one of the most important chemical reactions in industry. This work presents a strategy that emphasizes the synergistic
meta
/
para
-steric hindrance of
N
-aryl groups and electronic effects in newly synthesized neutral salicylaldiminato nickel catalysts. These nickel(II) catalysts exhibit exceptional thermostability
ranging from 30 °C to 130 °C
demonstrating enhanced catalytic activities and broadly regulated polyethylene molecular weights (3−341 kg·mol
−1
) and controlled polymer branch density (2−102 brs/1000C). The preferred catalyst
Ni3
with concerted steric and electronic effects enables the production of solid-state semi-crystalline polyethylene materials at temperatures below 90 °C. Notably
Ni3
exhibits an impressive tolerance of 110 °C and can withstand even the challenging polymerization temperature of 130 °C
leading to the production of polyethylene wax and oil. Also
functionalized polyethylene is produced.
PolyolefinSalicylaldiminato ligandNickel catalystOilWax
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