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Stereospecific Olefin Polymerization Catalyzed by Metallocene Complexes
Metallocene complexes that serve as stereoselective olefin polymerization catalysts are described. The polymerization of propylene, styrene, methyl...
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Specific Structures Enabled by Metallocene Catalysis in Polyethenes
This chapter briefly describes the history of metallocene polymerisation catalysts. The behaviour of metallocenes, particularly in copolymerisation...
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Exploring bimodal HDPE synthesis using single- and dual-site metallocene catalysts: a comprehensive review of the Monte Carlo method and AI-based approaches
The alteration of the molecular weight distribution (MWD) in high-density polyethylenes (HDPEs) can effectively address processing challenges....
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Effect of the physicochemical properties of SiO2 on performance of supported metallocene catalyst
The effect of the calcination temperature of SiO 2 on ethylene polymerization behavior was studied with supported metallocene catalysts. The...
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New Ways of Controlling the Molecular Mass Characteristics and Distribution of Branches for Polyethylene Synthesized over Supported Catalysts Containing Fe(II) Bis(imino)pyridyl and Ni(II) Bis(imine) Complexes
AbstractData on the ways of controlling the molecular structure of polyethylene (PE) synthesized over the supported catalysts containing Fe(II)...
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Polyacrylamide Supported Reagents and Catalysts in Various Organic Reactions
Functional polymers as solid-supported reagents and catalysts for organic synthesis were conventionally based on cross-linked polystyrene (PS)....
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N-doped Metallocene Catalysts for Synthesis of High Quality Lubricant Base Oils from Fishcher–Tropsch Synthesized α-Olefin
Derivatives of 2,4-dimethyldihydrocyclopentadiene were prepared, characterized by NMR spectroscopy, which was applied to 1-decene oligomerization. A...
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Metallocene-Catalyzed Selective Reactions
Transition metal cyclopentadienyl complexes constitute a large family of compounds that can be used as catalyst for a number of organic...
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The third compound promoted ethylene homopolymerization and copolymerization with 1-octene by using metallocene catalyst
In order to improve the polymerization behavior and polymer properties, hindered phenol is added as the third compound in a mature metallocene...
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Octahedral Zirconium Complexes as Polymerization Catalysts
The synthesis and X-ray structure of various octahedral zirconium complexes and their catalytic properties in the polymerization of α-olefins are...
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Metallocene encapsulated within a hybrid silica-polystyrene support
A series of heterogeneous metallocene catalysts were prepared by encapsulating Cp 2 ZrCl 2 within silica-polystyrene hybrid support. Immobilization was...
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Concerted Steric and Electronic Strategy in Thermostable Salicylaldiminato Nickel Catalysts for Ethylene (Co)polymerization
Olefin polymerization is one of the most important chemical reactions in industry. This work presents a strategy that emphasizes the synergistic meta/para...
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Oxide- and Zeolite-supported “Molecular” Metal Clusters: Synthesis, Structure, Bonding, and Catalytic Properties
This review is a summary of supported metal clusters with nearly molecular properties. These clusters are formed by adsorption or surface-mediated...
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An insight into Ziegler–Natta catalyst active site distribution for polyolefins: application of jitter differential evolution
Most commercial polyolefins are made with heterogeneous Ziegler–Natta and metallocene catalysts with narrow to broad molecular weight distribution...
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Zirconium-Based Catalysts in Organic Synthesis
Zirconium is a silvery-white malleable and ductile metal at room temperature with a crustal abundance of 162 ppm. Its compounds, showing Lewis acidic...
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Copolymerization of cyclic monomers by nickel α-diimine catalysts: catalyst structure, polymer characterization
Herein, this investigation aims to provide insight into the copolymerization of 5-ethylidene-2-norbornene (ENB) and norbornene (NB) by mononuclear...
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Immobilized on MgCl2 bis(phenoxy-imine) complexes of Ti and Zr as catalysts for preparing UHMWPE and ethylene/higher α-olefin copolymers
A series of mono- and polynuclear bis(phenoxy-imine) titanium and zirconium complexes were synthesized. The complexes were immobilized on an MgCl 2 ...
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Regioselective Polymerization of 1-Alkynes and Stereoselective Cyclopolymerization of α,ω-Heptadiynes
Metathesis-based polymerizations of 1-alkynes and cyclopolymerizations of 1,6-heptadiynes using late transition metal catalysts are reviewed. Results...
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Late Transition Metals as Homo- and Co-Polymerization Catalysts
In the present account we address two aspects of the polymerization processes catalyzed by the late-transition-metal complexes: (i) influence of the...
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Titanium(+4) and vanadium(+5) 8-oxyquinolinates as catalysts for the synthesis of high-molecular-weight polyethylene and ethylene-octene copolymers
New titanium(+4) and vanadium(+5) 8-oxyquinolinate complexes were synthesized. Their structures were determined by X-ray diffraction. The synthesized...