Effects of Important Operating Parameters on Product Properties and Operation of HDPE Slurry Reactor [PDF]
علوم و تکنولوژی پلیمر, 2007 In this article, a complete model for the mixed flow slurry reactor for polymerization of ethylene to high density polyethylene in the presence of Ziegler-Natta catalyst is presented. In addition to the effects of the multiple active sites, the effect of
M. Soltanieh +3 more
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Direct Carboboration of Aryl Alkenes with Stable Organoborons Through Ziegler-Type Addition. [PDF]
Adv Sci (Weinh)The direct carboboration of vinyl arenes with benzylic boronates has been achieved using KOtBu as the catalyst. Vinylcyclopropanes and vinylcyclobutane also participate in this reaction, yielding the corresponding 1,5‐ and 1,6‐carboboration products.
Yang M +5 more
europepmc +2 more sources
How can pH value during catalyst preparation affect the performance of vanadium-modified (SiO2/MgO/ MgCl2)•TiClx Ziegler-Natta polyethylene catalysts [PDF]
Polyolefins Journal, 2018 Vanadium-modified (SiO2/MgO/MgCl2)•TiClx Ziegler-Natta catalysts were prepared through co-impregnation of water-soluble magnesium and vanadium salts under different pH values.
Ting Fu +5 more
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What do We Know about Reaction Mechanism? The Electrospray Ionization Mass Spectrometry Approach [PDF]
, 2011 Santos, LS (reprint author), Univ Talca, Lab Asymmetr Synth, POB 747, Talca, Chile.Man's fascination with chemical reactions goes back to ancient times.
Santos, L.S.
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Design of stereoselective Ziegler–Natta propene polymerization catalysts [PDF]
Proceedings of the National Academy of Sciences, 2006 After five decades of largely serendipitous (albeit formidable) progress, catalyst design in Ziegler–Natta olefin polymerization, i.e., the rational implementation of new active species to target predetermined polyolefin architectures, has ultimately become a realistic ambition, thanks to a much deeper fundamental understanding and major ...
BUSICO, VINCENZO +5 more
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Insight into the Synthesis Process of an Industrial Ziegler–Natta Catalyst
Industrial & Engineering Chemistry Research, 2019 In Ziegler–Natta catalysis, the catalyst particle size has a strong influence not only on catalyst performance but also on the morphology and particle size distribution of the final polymer particles.
Antoine Klaue +5 more
semanticscholar +1 more source
Chemical state analysis of magnesium-supported Ziegler-Natta catalyst by soft X-ray emission spectrometer (SXES) after contact with alkyl aluminum [PDF]
Polyolefins JournalThis report is on the characterization of active Ti center in heterogeneous Ziegler-Natta catalysts with Soft X-ray Emission Spectrometer (SXES). Since titanium in the catalyst has various chemical bonds, it is important to grasp the chemical bond state.
Masayoshi Saito +6 more
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Ethylene Homopolymerization by Ziegler-Natta (TiCl4/MgCl2) Catalyst through Full Factorial Experimental Design [PDF]
علوم و تکنولوژی پلیمر, 2009 Full factorial experimental design (23) for the evaluation of slurry ethylene polymerization in the presence of an industrial TiCl4/MgCl2 Ziegler-Natta catalyst was employed.
S. Hakim +3 more
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Structure of a Permethylcyclopentadienyl-μ-tetramethylcyclopentadienylmethylene Scandium Dimer [PDF]
, 1992 Bis(η^5-pentamethylcyclopentadienyl)-bis[μ-2,3,4,5-tetramethyl-1-methylene-ScC^1:Sc'(η^5)-cyclopentadienyl]-discandium(III), [Sc_2(C_(10)H_(15))_2-(C_(10)H_(14)_2], M_r = 628.90, triclinic, Pl, ɑ = 8.641 (5), b= 9.478 (2), c = 12.338 (5) Å, ɑ = 75.58 (3),
Bercaw, John E. +2 more
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Mathematical modeling the effect of catalyst initial shape and the crack pattern in olefin copolymerization [PDF]
Polyolefins Journal, 2015 A two-dimensional (2D) single particle model for the copolymerization of propylene-ethylene with heterogeneous Ziegler-Natta catalyst is developed. The model accounts for the effects of the initial shape of the catalyst and carck/ pore patterns on the ...
Marzieh Nouri +3 more
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