2006
DOI: 10.1016/j.molcata.2005.09.023
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Studies on the activation and polymerization mechanism of ethylene polymerization catalyzed by bis(imino)pyridyl iron(II) precatalyst with alkylaluminum

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Cited by 21 publications
(8 citation statements)
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“…Through the detailed analysis, it was found that PE made in this system is composed of both the linear part and branched part. Additionally, it is proposed that the formation of low molecular weight part of PE was ascribed to both β–H elimination termination of the progressing chain and the chain transfer to alkylaluminum, which further supports the previously proposed mechanism for bimodal PE formation, that is, two different kinds of catalytic species presenting in this catalytic system LFeCl 2 /AlEt 3 10…”
Section: Introductionsupporting
confidence: 86%
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“…Through the detailed analysis, it was found that PE made in this system is composed of both the linear part and branched part. Additionally, it is proposed that the formation of low molecular weight part of PE was ascribed to both β–H elimination termination of the progressing chain and the chain transfer to alkylaluminum, which further supports the previously proposed mechanism for bimodal PE formation, that is, two different kinds of catalytic species presenting in this catalytic system LFeCl 2 /AlEt 3 10…”
Section: Introductionsupporting
confidence: 86%
“…The PE sample was prepared according to the published procedures 10. 1,2,4‐Trimethylbenzene (TMB, ≥98%) and ethyleneglycol‐monobutyl‐ether (BCS, ≥99%) were bought from J. T. Baker Chemicals and Tianjin Chemical Reagent Corp., respectively, and used without further purification.…”
Section: Methodsmentioning
confidence: 99%
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“…Figure 3 shows the 13 C NMR spectrum of PE prepared by the action of 9/MAO (Table 1, entry 3). One can clearly see signals due to the C 1 -C 5 short-chain branching [72][73][74][75][76][77][78][79][80][81][82] as well as the signals of the terminal vinyl group at d = 113.7 and 138.9 ppm. The latter may either result from a "standard" b-H elimination reaction or from an a-H elimination reaction followed by cross-metathesis with E.…”
Section: Wwwchemeurjorgmentioning
confidence: 99%
“…A further point is that polyolefinic products of many BIP iron alkyl aluminum catalyst systems are bimodally distributed . The higher the molecular weight, the more α ‐olefins are formed and the Al‐PE concentration is lower.…”
Section: Resultsmentioning
confidence: 99%