Frontiers in Chemistry, 2018 A catalytic approach to synthesize microfine ultra-high molecular weight polyethylene (UHMWPE) particles was proposed based on the exploitation of nano-sized catalysts.
Patchanee Chammingkwan +3 more
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Production of titanium tetrachloride (TiCl4) from titanium ores: A review [PDF]
Polyolefins Journal, 2017 Titanium (Ti) is the ninth most abundant element on earth. The titanium mineral ores are widely distributed in different parts of the world. The two main ores of titanium include rutile (TiO2) and ilmenite (FeO.TiO2).
Hossein Bordbar +2 more
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Bulletin of Chemical Reaction Engineering & Catalysis, 2018 The effect of a halocarbon (ethyl chloride) as a promoter on a Ziegler-Natta catalyst composed of TiCl4 (catalyst), AlEt3 (activator) and Mg(OEt)2 (support) in the polymerization of ethylene have been investigated.
Yaghoob Gholami +5 more
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Ti+4 determination in Ziegler–Natta polymerization catalysts via UV‒vis spectroscopy method [PDF]
Polyolefins JournalThe determination of Ti+4 in Ziegler–Natta catalysts is highly relevant for industrial plants that use Ziegler–Natta (ZN) catalysts based on TiCl4 as a source of titanium.
Jonas Biagini, Joao Henrique dos Santos
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MgCl2 Support Preparation Techniques and Their Effects on Ziegler-Natta Catalysts Performance in Propylene Polymerization [PDF]
علوم و تکنولوژی پلیمر, 2013 A primary adduct of MgCl2.3.3EtOH (A0) was prepared by melt quenching and then it was further dealcoholated by thermal and chemical methods. In thermal dealcoholation, two different support samples with MgCl2.2.7EtOH (A1) and MgCl2.1.8EtOH (A2) formulas ...
Najmeh Hadian +3 more
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Sixtieth Anniversary of Ziegler-Natta Catalysts and Stereospecific Polymerization [PDF]
Kemija u Industriji, 2015 This review article highlights the history of the discoveries of organometallic catalysts and stereospecific polymerization of α-olefins, dienes and a number of vinyl monomers by Karl Ziegler and Giulio Natta sixty years ago, their developments and ...
Janović Z. , Veksli Z.
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Study of Ethylene Polymerization Kinetics by TiCl4/Mg(OC2H5)2 Catalyst and Determination of the Active Sites Concentration [PDF]
علوم و تکنولوژی پلیمر, 2008 Ethylene was polymerized in slurry phase over a TiCl4/Mg(OC2H5)2 catalyst activated by Al(C2H5)3. It was shown experimentally that mass transfer resistance has no effect on polymerization kinetics.
S. Hakim, M.M. Mortazavi
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Study on the Effects of Temperature, Time and the Policy of Prepolymerization on Particle Morphology in Propylene Slurry Polymerization with Heterogeneous Ziegler-Natta Catalysts [PDF]
علوم و تکنولوژی پلیمر, 2007 The effects of temperature, time and the strategy of prepolymerization were studied on the morphology of polypropylene particles. propylene polymerization was carried out in slurry phase using 4th generation of Ziegler-Natta Catalyst, cyclohexylmethyl ...
G. Pircheraghi +2 more
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Magnesium alkoxide precursor to Ziegler-Natta catalyst - emphasis on morphology studies through computer vision approach [PDF]
Polyolefins JournalMgCl2 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
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Synthesis of High Isotactic and High Melt Flow Polypropylene in Liquid Propylene [PDF]
علوم و تکنولوژی پلیمر, 2007 This is a report on the study of high melt flow, highly isotactic polypropylene homopolymer synthesized in liquid monomer using a fifth generation Ziegler-Natta catalytic system.
M. Emami +3 more
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