Results 111 to 120 of about 81,401 (281)

An Investigation on Polymerization of Ethylene by Ziegler-Natta Catalyst in the Presence of a Promoter: Polymerization Behavior and Polymer Microstructure

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, Majid Abdouss, Sadegh Abedi, Farhad Azadi, Pezhman Baniani, Maryam Arsalanfar   +5 more
doaj   +1 more source

Efecto del Peso Molecular en la Formación del Polimorfo Beta en Polipropileno Isotáctico Metalocénico. [PDF]

, 2008
Existe un gran número de referencias relativas al efecto que la adición de agentes nucleantes, AN, en el polipropileno, iPP, supone en la generación de los distintos polimorfos, no existiendo estudios previos en el iPP metalocénico, m-iPP. Es objetivo de
Benavente Castro, Mª del Rosario, Cerrada, M.L., Lorenzo Esteban, Vicente, Martínez Urreaga, Joaquín, Orden Hernández, María Ulagares de la, Pereña, J.M., Polo-Corpa, M.J., Pérez Tabernero, Ernesto   +7 more
core  

High-precision Molecular Modelling for Ziegler-Natta Catalysts

, 2018
A major bottleneck of computational chemistry in heterogeneous catalysis is found at the difficulty and resultant inaccuracy of molecular models for catalyst surfaces.
Toshiaki Taniike, M. Terano
semanticscholar   +1 more source

Síntese e caracterização de copolímeros de propeno com 1-hexeno e 1,5-hexadieno Synthesis and characterization of propylene/1-hexene and propylene/1,5-hexadiene copolymers

Polímeros, 2012
Copolímeros de propeno com 1-hexeno e 1,5-hexadieno, contendo diferentes teores de comonômeros, foram obtidos utilizando técnicas de polimerização em lama e em massa com catalisadores Ziegler-Natta heterogêneos de alta atividade.
Aline F. Lima, Grazielle R. Borges, Lauriane M. Candeco, José C. Pinto, Márcio Nele, Susana Liberman   +5 more
doaj  

Evaluation of the Reactivity of Methanol and Hydrogen Sulfide Residues with the Ziegler-Natta Catalyst during Polypropylene Synthesis and Its Effects on Polymer Properties. [PDF]

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

Experimental-Density Functional Theory (DFT) Study of the Inhibitory Effect of Furan Residues in the Ziegler-Natta Catalyst during Polypropylene Synthesis. [PDF]

Int J Mol Sci, 2023
Hernández-Fernández J, Puello-Polo E, Marquez E.   +2 more
europepmc   +1 more source

Non-traditional Ziegler-Natta catalysis in α-olefin transformations: reaction mechanisms and product design

, 2017
This paper describes our recent results in the field of zirconocene-catalyzed α-oltfin transformations, and focuses on questions regarding the reaction mechanism, rational design of zirconocene pre-catalysts, as well as prospective uses of α-olefin ...
I. Nifant’ev, P. Ivchenko, A. Tavtorkin, A. Vinogradov, A. Vinogradov   +4 more
semanticscholar   +1 more source

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

Nanocrystalline TiO2 and halloysite clay mineral composite films prepared by sol-gel method:Synergistic effect and the case of silver modification to the photocatalytic degradation of basic blue- 41 azo dye in water [PDF]

, 2014
Tubular halloysite clay mineral and nanocrystalline TiO2 were incorporated in the preparation of nanocomposite films on glass substrates via sol-gel method at 450 °C.
Kaplani, E., Panagiotaras, D., Papoulis, D., Rapsomanikis, A., Stathatos, E.   +4 more
core  

Monomer-Isomerization Polymerization XXXIV. Active Sites for Isomerization in Monomer-Isomerization Polymerization of 2-Butene with Ziegler-Natta Catalyst [PDF]

, 1991
Kiyoshi Endo, Ryuichi Ueda, Takayuki Otsu   +2 more
openalex   +1 more source