Results 71 to 80 of about 600,060 (165)
In our article, some of the basic correlations concerning the polymerization behaviour of a Ziegler-Natta catalyst are presented. We have examined a general, commercial MgCl2 supported catalyst, the effect of the main polymerization parameters, such as ...
Suba, P., Németh, Sándor, Árva, P.
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Magnesium alkoxide precursor to Ziegler-Natta catalyst - emphasis on morphology studies through computer vision approach [PDF]
MgCl2 supported Ti catalyst is used in commercial propylene polymerization process. Morphology is a key performance determination parameter for polymer resins produced by commercial olefin polymerization process. Higher resin flowability and bulk density
Yogeshwar Thakare +5 more
doaj +1 more source
From Cages to Sheets: Computational Elucidation of Methylaluminoxane Structure and Reactivity
Methylaluminoxane (MAO), the dominant cocatalyst in metallocene‐based olefin polymerization, has resisted structural characterization for decades. This review traces the computational journey from early cage and nanotube proposals to the identification of two‐dimensional aluminoxane sheets as the thermodynamically preferred motif, and how this ...
Mikko Linnolahti +2 more
wiley +1 more source
Crystal Structures of Ziegler-Natta Catalyst Supports
The crystal structures of three MgCl2·nEtOH complexes with n=1.5, 2.8, and 3.3 have been fully determined. Such complexes are the fundamental precursors for Ziegler–Natta polymerization catalysts used to produce polyolefins on a multimillion-ton scale ...
Fait A. +5 more
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Le développement d'un nouveau catalyseur de type Ziegler-Natta à base de Fe, FeCl2/MgCl2(THF)x/BCl3, s'inscrit dans un contexte mondial d'augmentation des ressources en métaux alternatifs pour la catalyse et les nouveaux matériaux polymères.
Morais Bolner, Felipe
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Hydrocarbon α,ω‐dienes are mainly produced from steam‐cracking derivatives, but high costs, complexity, and environmental impact limit their use. This review highlights sustainable paths from biomass and plastic upcycling, and surveys catalytic transformations into carbocycles and specialty polymers, emphasizing their role as modular building blocks ...
Rosa Villaccio, Giuseppe Leone
wiley +1 more source
Structural Characterization of Zirconium Cations Derived from a Living Ziegler−Natta Polymerization System: New Insights Regarding Propagation and Termination Pathways for Homogeneous ...
Kumudini C. Jayaratne (2443618) +3 more
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Reduced graphene oxide/SiO2 (RGO/SiO2) serving as a novel spherical support for Ziegler-Natta (Z-N) catalyst is reported. The surface and interior of the support has a porous architecture formed by RGO/SiO2 sandwich structure.
Enqi Su +7 more
doaj +1 more source
This research elucidates the relationship between the molecular structure of commercially available ethylene–propylene copolymers and an ethylene/1‐olefin copolymer and its ability to compatibilize high‐density polyethylene/isotactic polypropylene blends. These findings indicate that the compatibilization of these blends with random copolymers benefits
Bailey Eberle +3 more
wiley +1 more source
Historical and Philosophical Remarks on Ziegler-Natta Catalysts
Part 1 outlines the complex, parallel historical evolution of Ziegler-Natta catalysts and related problems. In Part 2, as a general method of inquiry, chemical language and discourse are analyzed, at first to clarify chemists’ epistemic views and the ...
HYLE Publications, Luigi Cerruti
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