Results 71 to 80 of about 600,113 (211)
Impact of Pyridine on the copolymerisation behaviour of a Ziegler-Natta catalyst
, 2021 The aim of the thesis is to study the influence of a Ziegler Natta catalyst poison on the copolymerisation behaviour of ethylene. The catalyst poison of choice is pyridine and the comonomer 1-butene. For statistical analysis, a Design of Experiments (DoE)
Probst, Laura
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Polímeros, 2007 Catalisadores envelhecidos em diferentes tempos (0, 5, 15, 40, 80 e 160 dias) e diferentes temperaturas (10, 25 e 40 °C) foram testados na polimerização 1,4-cis do 1,3-butadieno.
Ivana L. Mello +3 more
doaj +1 more source
Advanced Synthesis &Catalysis, Volume 368, Issue 18, 19 September 2026.A general C─C cross‐coupling method employing earth‐abundant organoaluminium nucleophiles is enabled by electronically highly donating and sterically demanding ylide‐substituted phosphine (YPhos) ligands under Pd catalysis. This protocol represents an organoaluminium cross‐coupling that operates with a single catalyst system across all carbon ...
Nicolas Kaiser +3 more
wiley +1 more source
, 2011 Porous polyethylene with nanofiber structure in the form of discrete, freeflowing, micron-sized spheres was formed in high activity by ethylene polymerization with porous polymer supported Ziegler-Natta catalyst.
Lei JH +7 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
doaj +1 more source
Chemistry – A European Journal, Volume 32, Issue 33, 1 September 2026.A fully noble‐metal‐free photocatalytic system that couples cobaloxime catalysis with Cu photosensitizer for HAT‐driven acetylene‐to‐ethylene conversion is reported. ABSTRACT The purification of ethylene streams from acetylene impurities remains a key industrial challenge, for which light‐powered strategies are emerging as sustainable alternatives to ...
Anna Fortunato +5 more
wiley +1 more source
Dimerization of 1-butene via zirconium-based Ziegler-Natta catalyst
, 2000 A zirconium-based Ziegler-Natta catalytic system has been tested in the dimerization of 1-butene. It was found that the concentration of Et2AlCl, Ph3P and PhONa as well as the reaction temperature had great influences on the activity and selectivity of ...
Han, XW +4 more
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, 2007 In our article, some of the basic correlations concerning the polymerization behaviour of a Ziegler-Natta catalyst are presented. We have examined a general, commercial MgCl2 supported catalyst, the effect of the main polymerization parameters, such as ...
Suba, P., Németh, Sándor, Árva, P.
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From Cages to Sheets: Computational Elucidation of Methylaluminoxane Structure and Reactivity
ChemPlusChem, Volume 91, Issue 8, August 2026.Methylaluminoxane (MAO), the dominant cocatalyst in metallocene‐based olefin polymerization, has resisted structural characterization for decades. This review traces the computational journey from early cage and nanotube proposals to the identification of two‐dimensional aluminoxane sheets as the thermodynamically preferred motif, and how this ...
Mikko Linnolahti +2 more
wiley +1 more source
, 2023 Le développement d'un nouveau catalyseur de type Ziegler-Natta à base de Fe, FeCl2/MgCl2(THF)x/BCl3, s'inscrit dans un contexte mondial d'augmentation des ressources en métaux alternatifs pour la catalyse et les nouveaux matériaux polymères.
Morais Bolner, Felipe
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