Advancing polyethylene properties by incorporating NO2 moiety in 1,2-bis(arylimino)acenaphthylnickel precatalysts: synthesis, characterization and ethylene polymerization

	Advancing polyethylene properties by incorporating NO2 moiety in 1,2-bis(arylimino)acenaphthylnickel precatalysts: synthesis, characterization and ethylene polymerization
	Mahmood, Qaiser 1,2,3; Zeng, Yanning 1,2; Wang, Xinxin 1,2; Sun, Yang 1,2; Sun, Wen-Hua1,2,3,4
刊名	DALTON TRANSACTIONS
	2017-06-07
卷号	46 期号:21 页码:6934-6947
英文摘要	A new family of nickel halides (bromides Ni1-Ni5 and chlorides Ni6-Ni10) ligated by 1-(2,6-di-benzhydryl-4-nitrophenylimino)-2-(arylimino) acenaphthylene (Aryl = 2,6-Me2C6H3 L1, 2,6-Et2C6H3 L2, 2,6-(Pr2C6H3)-Pr-i L3, 2,4,6-Me3C6H2 L4, and 2,6-Et-2-4-MeC6H2 L5) have been prepared and well characterized, and the scope of their catalytic properties toward the polymerization of ethylene has been investigated. Upon activation with either Et2AlCl or EASC, the nickel bromide complexes displayed better activities than their nickel chloride counterparts and produced higher-molecular-weight polyethylene in the range of 10(6) g mol(-1) with a very narrow range of molecular weight distributions. In comparison with reference precatalysts with non-nitro substituents (CH3, F or Cl), the title complexes experienced a modest negative effect on catalytic activity upon replacement with a NO2 moiety (activity up to 4.61 x 10(6) g PE (mol Ni)(-1) h(-1) at 20 degrees C). Conversely, the NO2 moiety exerted a positive effect to increase the molecular weight of the resulting polyethylene, and Ni-4/Et2AlCl gave polyethylene with a maximum molecular weight of as high as 32.8 x 10(5) g mol(-1), which is not only the highest among the title complexes but also higher than any literature values reported with 1,2-diiminoacenaphthylnickel halides.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38531]
专题	化学研究所_工程塑料实验室
作者单位	1.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, CAS Res Educ Ctr Excellence Mol Sci & Int Sch, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Mahmood, Qaiser,Zeng, Yanning,Wang, Xinxin,et al. Advancing polyethylene properties by incorporating NO2 moiety in 1,2-bis(arylimino)acenaphthylnickel precatalysts: synthesis, characterization and ethylene polymerization[J]. DALTON TRANSACTIONS,2017,46(21):6934-6947.
APA	Mahmood, Qaiser,Zeng, Yanning,Wang, Xinxin,Sun, Yang,&Sun, Wen-Hua.(2017).Advancing polyethylene properties by incorporating NO2 moiety in 1,2-bis(arylimino)acenaphthylnickel precatalysts: synthesis, characterization and ethylene polymerization.DALTON TRANSACTIONS,46(21),6934-6947.
MLA	Mahmood, Qaiser,et al."Advancing polyethylene properties by incorporating NO2 moiety in 1,2-bis(arylimino)acenaphthylnickel precatalysts: synthesis, characterization and ethylene polymerization".DALTON TRANSACTIONS 46.21(2017):6934-6947.