Immobilization of [VCl3(N-2,6-Me2C6H3)] Complex on Silica Supports: Synthesis and Catalytic Testing for Ethylene Polymerization

Fiorentino, Antonio; Panariti, Persi; Turnhout, Lars van; Spronck, Mitch; Klein, Axel; Schmitz, Simon; Rastogi, Sanjay; Blom, Burgert; Romano, Dario

doi:10.1021/acs.iecr.0c01908

Cited by 7 publications

(3 citation statements)

References 46 publications

(91 reference statements)

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“…Titanium and vanadium complexes demonstrate efficient and controllable performance in polymerization catalysis. Additionally, the ligands within these complexes are crucial for enhancing catalyst activity [3,4].…”

Section: Introductionmentioning

confidence: 99%

Promotion of B(C6F5)3 as Ligand for Titanium (or Vanadium) Catalysts in the Copolymerization of Ethylene and 1-Hexene: A Computational Study

Zhang

Wang

et al. 2023

Polymers

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Density functional theory (DFT) is employed to investigate the promotion of B(C6F5)3 as a ligand for titanium (or vanadium) catalysts in ethylene/1-hexene copolymerization reactions. The results reveal that (I) Ethylene insertion into TiB (with B(C6F5)3 as a ligand ) is preferred over TiH, both thermodynamically and kinetically. (II) In TiH and TiB catalysts, the 2,1 insertion reaction (TiH21 and TiB21) is the primary pathway for 1-hexene insertion. Furthermore, the 1-hexene insertion reaction for TiB21 is favored over TiH21 and is easier to perform. Consequently, the entire ethylene and 1-hexene insertion reaction proceeds smoothly using the TiB catalyst to yield the final product. (III) Analogous to the Ti catalyst case, VB (with B(C6F5)3 as a ligand) is preferred over VH for the entire ethylene/1-hexene copolymerization reaction. Moreover, VB exhibits higher reaction activity than TiB, thus agreeing with experimental results. Additionally, the electron localization function and global reactivity index analysis indicate that titanium (or vanadium) catalysts with B(C6F5)3 as a ligand exhibit higher reactivity. Investigating the promotion of B(C6F5)3 as a ligand for titanium (or vanadium) catalysts in ethylene/1-hexene copolymerization reactions will aid in designing novel catalysts and lead to more cost-effective polymerization production methods.

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Section: Introductionmentioning

confidence: 99%

Promotion of B(C6F5)3 as Ligand for Titanium (or Vanadium) Catalysts in the Copolymerization of Ethylene and 1-Hexene: A Computational Study

Zhang

Wang

et al. 2023

Polymers

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“…The preparation of various UHMWPEs and its blends by transition metal synthesis is also still progressing, and a development of a grade for 3D printing seems timely. [40][41][42][43][44][45] The aim of this study is to provide advanced UHMWPE composite powders with the option to prepare superior UHMWPE parts by laser sintering. A facile route to UHMWPE built parts seemed to use core-shell particles in form of HDPE@UHMWPE as starting point.…”

Section: Introductionmentioning

confidence: 99%

“…The preparation of various UHMWPEs and its blends by transition metal synthesis is also still progressing, and a development of a grade for 3D printing seems timely. [ 40–45 ]…”

Section: Introductionmentioning

confidence: 99%

HDPE@UHMWPE Powders for Power Bed Fusion Based Additive Manufacturing

Wencke¹,

Proes

Imgrund

et al. 2022

Macro Materials & Eng

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Commercial UHMWPE powder of 60 μm size (d50) embossed with 2-5 wt% of nanosilica is used as a support for the preparation of core-shell HDPE@silica@UHMWPE particles. The HDPE shell is generated by polymerization of ethylene in toluene slurry after treatment of the silica@UHMWPE with a methyl aluminoxane activated bisimine pyridine iron complex. Heat pressing the powder gives a solid material with identifiable original UHMWPE particles and a layer from fusion of UHMWPE and the surrounding HDPE shell; the properties match those of the UHMWPE base material. The powder flow properties of the HDPE@silica@UHMWPE are insufficient for a powder bed fusion process, a value for the flow function between 2 and 3 is measured in a ring shear tester. Additivation with nanosilica helps to overcome the insufficient flowability and allows the material to be recoated in a power bed fusion system. Laser sintering gives evidence for a substantial mixing and welding of the HDPE shells and UHMWPE. Caking at the surface of the built parts hinders the manufacturing of isolated parts. Further additivation with carbon black reduces the caking; however, the welding within the HDPE@silica@UHMWPE material is much less strong.

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Post-metallocene catalysts for the synthesis of ultrahigh molecular weight polyethylene: Recent advances

Antonov

Bryliakov

2021

European Polymer Journal

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Immobilization of [VCl₃(N-2,6-Me₂C₆H₃)] Complex on Silica Supports: Synthesis and Catalytic Testing for Ethylene Polymerization

Cited by 7 publications

References 46 publications

Promotion of B(C6F5)3 as Ligand for Titanium (or Vanadium) Catalysts in the Copolymerization of Ethylene and 1-Hexene: A Computational Study

Promotion of B(C6F5)3 as Ligand for Titanium (or Vanadium) Catalysts in the Copolymerization of Ethylene and 1-Hexene: A Computational Study

HDPE@UHMWPE Powders for Power Bed Fusion Based Additive Manufacturing

Post-metallocene catalysts for the synthesis of ultrahigh molecular weight polyethylene: Recent advances

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