Results 101 to 110 of about 94,776 (218)

Uma revisão sobre polimerização de olefinas usando catalisadores Ziegler-Natta heterogêneos A survey on olefins polymerization using heterogeneous Ziegler-Natta catalysts

Polímeros, 2011
A produção em larga escala de materiais poliméricos de elevado interesse industrial, provenientes da polimerização estereoespecífica de olefinas, tornou-se possível depois do advento dos catalisadores Ziegler-Natta.
Fabricio Machado, José Carlos Pinto
doaj  

Heterogeneity of Active Sites in the Polymer Chain Transfer Reactions at Olefin Polymerization over Multisite Supported Ziegler-Natta Catalysts. [PDF]

Polymers (Basel), 2023
Matsko M, Zakharov V.
europepmc   +1 more source

DFT and ONIOM Simulation of 1,3-Butadiene Polymerization Catalyzed by Neodymium-Based Ziegler-Natta System. [PDF]

Polymers (Basel), 2023
Masliy AN, Akhmetov IG, Kuznetsov AM, Davletbaeva IM.   +3 more
europepmc   +1 more source

Aktivierung eines Industriellen Ziegler-Natta Katalysators für die Propylenpolymerisation und Entwicklung einer Neuartigen Methode zur Kontrollierten Synthese Sphärischer Ziegler-Natta Katalysatorträger

, 2010
In the first part of this thesis, a pre-commercial industrial catalyst was treated with different hydrocarbon solvents and mixtures thereof with titanium tetrachloride to enhance its activity in the polymerization of propylene. In the second part of this
Hanisch, Christian
core  

Impact of Traces of Hydrogen Sulfide on the Efficiency of Ziegler-Natta Catalyst on the Final Properties of Polypropylene. [PDF]

Polymers (Basel), 2022
Hernández-Fernández J, Cano H, Aldas M.   +2 more
europepmc   +1 more source

Theoretical-Experimental Study of the Action of Trace Amounts of Formaldehyde, Propionaldehyde, and Butyraldehyde as Inhibitors of the Ziegler-Natta Catalyst and the Synthesis of an Ethylene-Propylene Copolymer. [PDF]

Polymers (Basel), 2023
Hernández-Fernández J, Ortega-Toro R, Castro-Suarez JR.   +2 more
europepmc   +1 more source

Aliphatic Anion Exchange Ionomers with Long Spacers and No Ether Links by Ziegler-Natta Polymerization: Properties and Alkaline Stability. [PDF]

Molecules, 2022
Becerra-Arciniegas RA, Narducci R, Ercolani G, Pasquini L, Knauth P, Di Vona ML.   +5 more
europepmc   +1 more source

Structure and Stability of Aluminum Alkyl Cocatalysts in Ziegler−Natta Catalysis

, 2016
The structure of organoaluminum(halide) complexes, used as cocatalysts in Ziegler−Natta catalysis, is investigated by experimental far-infrared spectroscopy and by quantum simulations.
Betty B. Coussens (1588993), Francesco Buda (1284285), Robert J. Meier (1273476), Jaap Renkema (3053157), Sef van Heel (3053163), Antulio Tarazona (3053160), Eckhard Koglin (3053166)   +6 more
core   +1 more source

Coordination copolymerization monitoring of ethylene and alfa-olefins by in-line Raman spectroscopy. [PDF]

RSC Adv, 2022
Comparán-Padilla VE, García-Zamora M, Infante-Martínez R, Díaz JA, Villarreal-Cárdenas L, Rodríguez-Hernández MT, Pérez-Camacho O.   +6 more
europepmc   +1 more source

Alkaline-earth-promoted Pd–Ag/Al2O3 for selective acetylene hydrogenation: green-oil mitigation, ethylene selectivity, and implications for hydrogen spillover

Scientific Reports
Removing trace acetylene from ethylene streams is critical to protect Ziegler–Natta polymerization. Eggshell Pd–Ag/θ-Al2O3 spheres (0.03 wt% Pd, 0.13 wt% Ag) were promoted with 1 wt% alkaline-earth additives to suppress green oil and improve ethylene ...
Farnaz Rahbar Shamskar, Sajad Mobini, Mehran Rezaei   +2 more
doaj   +1 more source