Preparation of spherical MgCl2-supported bis(phenoxy-imine) zirconium complex for ethylene polymerization

Xu, Renwei; Wang, Shibo; Wang, Na; Mao, Bingquan

doi:10.1016/j.molcata.2006.07.061

Cited by 17 publications

(15 citation statements)

References 28 publications

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“…2 It should be stressed, however, that these are primarily homogeneous systems, 3,4 although a few attempts were made lately to immobilize them on a carrier. [5][6][7] Our group also studied the effect of anchoring postmetallocene catalysts, vanadium and titanium ones, and the magnesium compounds were used as a support. [8][9][10] Magnesium chloride has so far been considered the best support for Ziegler-Natta catalysts and it is commonly employed to immobilize them.…”

Section: Introductionmentioning

confidence: 99%

A supported titanium postmetallocene catalyst: Effect of selected conditions on ethylene polymerization

Pietruszka

Białek

Czaja

2011

J of Applied Polymer Sci

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Ethylene polymerization with a titanium complex [N,N-ethylenebis(3-methoxysalicylideneiminato)titanium dichloride] immobilized on the magnesium support with the formula MgCl 2 (THF) 0.32 (Et 2 AlCl) 0.36 was studied. In particular, the effects of polymerization temperature, monomer pressure, and polymerization time on the activity of the catalyst and on the polyethylene properties (molecular weight and its distribution, melting point, crystallinity, and bulk density) were evaluated. The findings of investigations prove that the studied supported titanium catalyst is highly active in ethylene polymerization, and its activity increases with increasing temperature and monomer pressure. Moreover, stability of the catalytic systems is dependent on the activator type used. Me 3 Al, when employed as an activator, makes the catalytic system undergo no deactivation in practice. The catalyst coupled with MAO turned out less stable.

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Section: Introductionmentioning

confidence: 99%

A supported titanium postmetallocene catalyst: Effect of selected conditions on ethylene polymerization

Pietruszka

Białek

Czaja

2011

J of Applied Polymer Sci

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“…When the support was thermally pretreated at lower temperature, the resultant solid catalysts, were inactive for ethylene polymerization. On the contrary, when the support was pretreated at higher temperature, the corresponding solid catalysts were all active for ethylene polymerization [94].…”

Section: Immobilizing Polymerization Catalystsmentioning

confidence: 95%

FI Catalyst for Polymerization of Olefin

Damavandi¹,

Ahmadjo²,

Sandaroos³

et al. 2012

Polymerization

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“…Young [13] used a thermally pretreated bimetallic MgCl 2 /tetrahydrofuran (THF)/ TiCl 4 catalyst for producing polyethylene particles with regular and homogeneous globule. Mao [14,15] developed MgCl 2 -supported Ziegler-Natta catalysts for ethylene and propylene polymerization to produce the polymer particles with good spherical morphology. Choi [7] synthesized MgCl 2 -supported nickel diimine catalysts for ethylene polymerization with high catalytic activity, and the obtained polymer particles had good spherical morphology.…”

Section: Introductionmentioning

confidence: 99%

The Preparation of CNTs/PE Nanocomposites Particles with Coral Shape and Core-Shell Structure In Situ Produced via Nanotemplate Catalyst Based on MWCNTs

Wang¹

2015

J Adv Chem Eng

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A kind of nano template catalyst was prepared through loading the active compound (m-CH 3 PhO)TiCl3 on carbon nanotubes (CNTs). This catalyst can catalyze (co)polymerization of ethylene to form CNTs/polyethylene (PE) nanocomposites particles. The nano template catalyst showed high catalytic activity up to 5.8 kg/(gTi.h.p) for the copolymerization of ethylene with 1-hexene. The results revealed that the nascent CNTs/PE nanocomposites particles looked like coral shape and featured with the core-shell structure which CNTs as the core and polyethylene as the shell. Journal of Advanced Chemical EngineeringJ o ur nal of A d v a n ce d Che m ic a l E ng ineer in g

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Preparation of spherical MgCl2-supported bis(phenoxy-imine) zirconium complex for ethylene polymerization

Cited by 17 publications

References 28 publications

A supported titanium postmetallocene catalyst: Effect of selected conditions on ethylene polymerization

A supported titanium postmetallocene catalyst: Effect of selected conditions on ethylene polymerization

FI Catalyst for Polymerization of Olefin

The Preparation of CNTs/PE Nanocomposites Particles with Coral Shape and Core-Shell Structure In Situ Produced via Nanotemplate Catalyst Based on MWCNTs

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