Modeling of metallocene catalyzed propylene polymerization in fluidized bed reactors [PDF]
MATEC Web of Conferences, 2019 A study was performed to improve the model for metallocene catalyzed polyolefin polymerization in fluidized bed reactor by adapting multi-scale modeling approach.
Law Chew-Sang, Hussain Mohd Azlan
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Immobilization of Metallocene Catalyst in Nano-Fumed Silica for Production of Polyethylene in a Disentangled State [PDF]
علوم و تکنولوژی پلیمر, 2019 Hypothesis: Production of polyethylene (PE) of a relatively high molecular weight with improved properties and acceptable processability has been allocated to many research efforts.
Hasan Keshavarz Mirza-Mohamadi +3 more
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Harnessing Toluene Solvent as a Reactant: Regioselective Benzyl Radical Addition to Multi-π 1,5-Enynes in a Copper-Catalyzed Cascade to Indenes. [PDF]
ChemistryA copper‐catalyzed three‐component radical cascade of 1,5‐enynes with toluene and benzoic acids enables regioselective benzyl radical addition to multi‐Π systems, efficiently delivering polysubstituted indenes from an abundant solvent feedstock. ABSTRACT C─H activation of toluene generates a benzyl radical that undergoes C─C coupling, converting an ...
Rajai-Daryasarei S +7 more
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Developments of Chiral Metallocenes as Polymerization Catalysts [PDF]
Molecules, 2005 This review article describes developments in chiral metallocenes as polymerization catalysts focusing on C2 symmetric ansa-zirconocene complexes. Selective synthesis of rac-isomers of ansa-zirconocenes are surveyed. Isospecific polymerizations of propylene catalyzed by chiral zirconocenes are summarized.
Yuushou Nakayama, Takeshi Shiono
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Synthesis of (Ind)2ZrCl2 Catalyst for Copolymerization of Ethylene and Propylene: Parameters Effect on Productivity [PDF]
علوم و تکنولوژی پلیمر, 2010 Bis(indenyl)zirconium dichloride as a catalyst was synthesized using a modified method at the room temperature. Polymerization of ethylene and copolymerization of ethylene and propylene were carried out by this metallocene catalyst. Ethylene propylene (P/
S. Ahmadjo +4 more
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A Brief Review of the Cocatalysts Types and their Performance in (Co)Polymerization Processes of Olefins: From Synthesis to Industrial Application [PDF]
Baspārish, 2022 In the past, most researchers believed that cocatalyst is a passive component that only has the task of "removing impurities" and "alkylating" the active centers of catalyst at the beginning of the polymerization and does not play a specific role in the ...
maryam masoori +5 more
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Nanomaterials, 2021 We have investigated the effects of temperature, diameter and metal catalyst type on the growth of inner nanotubes inside metallocene-filled single-walled carbon nanotubes (SWCNTs).
Marianna V. Kharlamova +1 more
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The influence of the oxygen donor capacity of polystearylmethacrylate over polyethylene bulk density when using modified methylaluminoxane as co-catalyst [PDF]
Polyolefins Journal, 2022 In this work, the interaction between a polystearylmethacrylate (Mn = 8,900 g mol-1, Xn = 26, Ð = 1.1) and modified methylaluminoxane 12 (MMAO-12) co-catalyst is studied using different spectroscopic methods.
Odilia Pérez-Camacho +1 more
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Ethylene polymerization using dealuminated ZSM-2 zeolite nanocrystals as an active metallocene catalyst support [PDF]
, 2008 The preparation of dealuminated (DEAL) ZSM-2 zeolite nanocrystals for use as an active metallocene polymerization catalyst support is presented. The DEAL-ZSM-2 zeolite form was prepared by using steam treatment; metallocene catalyst was directly ...
Rojas Guerrero, René +5 more
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Materials Proceedings, 2023 In this study, the state of catalysts is revealed during the growth of single-walled carbon nanotubes (SWCNTs) inside metallocene-filled SWCNTs. High-resolution transmission electron microscopy and Raman spectroscopy were used to study the kinetics of ...
Marianna V. Kharlamova
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