Alternative Metallocenes in Floating Catalyst-CVD: Synthesis of Novel Carbon Nanostructures [PDF]
Nanotechnology, Science and ApplicationsSandra Lepak-Kuc,1,2 Agnieszka Lekawa-Raus,2 Malgorzata Jakubowska,1,2 Krzysztof Koziol3 1Faculty of Mechanical and Industrial Engineering, Warsaw University of Technology, Warsaw, Poland; 2Centre for Advanced Materials and Technologies (CEZAMAT), Warsaw
Lepak-Kuc S +3 more
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Modeling intraparticle transports during propylene polymerizations using supported metallocene and dual function metallocene as catalysts: Single particle model [PDF]
Chemical Industry and Chemical Engineering Quarterly, 2014 Two improved multigrain models (MGMs) for preparing homopolypropylene and long chain branched polypropylene via propylene polymerization using silica-supported metallocene or dual function metallocene as catalysts are presented in this paper ...
Li Hua-Rong, Che Liming, Luo Zheng-Hong
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Substituent effect of Cp2TiCl2 catalyst for ethylene polymerization: A DFT study [PDF]
Polyolefins Journal, 2023 The substituents on cyclopentadienyl (Cp) can regulate the electronic effect and hindrance of the active center in the metallocene catalyst. This modification can greatly change the catalytic activity of the catalyst and affect some features of the ...
Kefeng Xie +5 more
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Immobilizing metallocene by solid polymethylaluminoxane “sMAO” for slurry-phase ethylene-1-hexene copolymerization [PDF]
MATEC Web of Conferences, 2022 In the field of olefin catalytic polymerization, metallocene catalysts show higher activity than traditional Ziegler-Natta catalysts. In this study, benzoic acid catalyzed the controlled hydrolysis of trimethylaluminum (TMA) to methylaluminoxane (MAO ...
Wu Chaofan +5 more
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On the Bona Fide Sampling of Reaction Candidates in Red Moon Method by Replica-Exchange Molecular Dynamics Method: REMD-RM Method and Its Efficacy in Polymerization and Cross-Linking Reactions of Polypropylene. [PDF]
J Comput ChemSchematic representation of the REMD‐RM method, which integrates the Red Moon (RM) method and the replica‐exchange molecular dynamics (REMD) method. By enhancing molecular reconfiguration and diffusion in the reactant system, the REMD‐RM method can efficiently explore a wide phase space and effectively accelerate the search for reaction candidates ...
Matsumoto K +4 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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Comparison of Ethylene/1-Hexene Copolymers Microstructures Synthesized by Homogeneous and Heterogeneous Metallocene Catalysts [PDF]
علوم و تکنولوژی پلیمر, 2013 The substituted (bis-2-PhIndZrCl2) and non-substituted (bis-IndZrCl2) indenylbased metallocene catalysts were synthesized and used in homogenous and heterogeneous forms for copolymerization of ethylene and 1-hexene.
Saeid Ahmadjo
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A Study on the Effect of Catalyst Types on Microstructure of Ethylene/1-Hexene Copolymer by Thermal Fractionation [PDF]
علوم و تکنولوژی پلیمر, 2015 Olefinic copolymers of ethylene/1-hexene were synthesized by three main types of supported catalysts, including Philips, Ziegler-Natta and metallocene catalysts, and the specific microstructural features delivered by each class of the catalysts were ...
Seyed Mohammad Mehdi Mortazavi
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Study of Ziegler-Natta/(2-PhInd)2ZrCl2 hybrid catalysts performance in slurry propylene polymerization [PDF]
Polyolefins Journal, 2015 Several types of hybrid catalysts are made through mixing of 4th generation Ziegler-Natta (ZN) and (2-PhInd)2ZrCl2 metallocene catalysts using triethylaluminum (TEA) as coupling agent.
Gholam-Reza Nejabat +7 more
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Polymerization of sterically hindered a-olefins with single-site group 4 metal catalyst precursors [PDF]
Polyolefins Journal, 2016 A variety of group 4 metal catalytic systems (C2-symmetric {EBTHI}-, {SBI}-type zirconocene complexes (C2-1–4); C1-symmetric (C1-5–8) and Cs-symmetric (Cs-9) {Cp/Flu}-type zirconocene complexes; Cp*2ZrCl2 (Cp* 2-10)), half-metallocene complexes (CpTiCl3,
Gabriel Theurkauff +6 more
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