Copolymerization of ethylene with norbornene by using metallocene/TIBA/B(C6F5)3 system [PDF]
Polyolefins Journal, 2023 Cyclic olefin copolymer is a type of high-performance polyolefin material, which is prepared by using a single-site catalyst in solution polymerization. The common activator of this system is alkyl aluminoxane or organic boron/aluminum system.
Wei Wang +7 more
doaj +1 more source
Titanium-Catalyzed Defluorination of Poly(Vinyl Fluoride) and Poly(Vinylidene Fluoride) Under Friedel-Crafts Conditions. [PDF]
Angew Chem Int Ed EnglCationic titanium sandwich catalysts display exceptional activity in the hydrodefluorination of Csp3─F bonds, in the presence of silanes and aromatic solvents (turnover numbers up to 3000). As a result, they can be used to defluorinate challenging fluoropolymers, such as poly(vinyl fluoride) (PVF) or poly(vinylidene fluoride) (PVDF).
Le Moigne L +9 more
europepmc +3 more sources
Active site nature of magnesium dichloride-supported titanocene catalysts in olefin polymerization [PDF]
Polyolefins Journal, 2015 Heterogeneous Ziegler-Natta and homogeneous metallocene catalysts exhibit greatly different active sitenature in olefin polymerization. In our previous study, it was reported that MgCl2-supported titanocenecatalysts can generate both Ziegler-Natta-type ...
Toshiaki Taniike +2 more
doaj +1 more source
Nanomaterials, 2020 The paper reports the synthesis of carbon nanotubes from ethanol over group VIII (Fe, Co, Ni) catalysts derived from corresponding metallocenes. Several unexpected cooperative effects are reported, which are never observed in the case of individual ...
Aida R. Karaeva +4 more
doaj +1 more source
Synthesis of Metallocene Catalyst for Terpolymerization of Ethylene, Propylene and Diene [PDF]
علوم و تکنولوژی پلیمر, 2014 The bis(indenyl) zirconium dichloride catalyst was synthesized by a modified method at room temperature. Terpolymerization of ethylene, propylene and diene monomers were carried out using this metallocene catalyst under different conditions of different ...
S.M.M. Mortazavi +4 more
doaj +1 more source
Nucleus-independent chemical shift profiles along the intrinsic distortion path for Jahn-Teller active molecules. Study on cyclopentadienyl radical and cobaltocene [PDF]
Journal of the Serbian Chemical Society, 2015 The aromatic/antiaromatic behavior of the cyclopentadienyl anion (Cp-), bis(η5-cyclopentadienyl)iron(II) (Fe(Cp)2), as well as of the Jahn-Teller (JT) active cyclopentadienyl radical (Cp∙) and bis(η5-cyclopentadienyl)cobalt(II) (Co(Cp)2) has ...
Anđelković Ljubica +3 more
doaj +1 more source
Immobilizing metallocene by solid polymethylaluminoxane “sMAO” for slurry-phase ethylene-1-hexene copolymerization [PDF]
MATEC Web of Conferences, 2022 In the field of olefin catalytic polymerization, metallocene catalysts show higher activity than traditional Ziegler-Natta catalysts. In this study, benzoic acid catalyzed the controlled hydrolysis of trimethylaluminum (TMA) to methylaluminoxane (MAO ...
Wu Chaofan +5 more
doaj +1 more source
Charge Transfer in Metallocene Intercalated Transition Metal Dichalcogenides [PDF]
, 2022 Intercalating redox active molecules into layered materials expands their functionality for emerging energy technologies. However, the mechanism of charge transfer to and from these small molecules within the confined environment of the layered host ...
Ding-Yuan, Kuo +7 more
core +2 more sources
Magnetic hysteresis up to 80 kelvin in a dysprosium metallocene single-molecule magnet
Science, 2018 Breaking through the nitrogen ceiling Single-molecule magnets could prove useful in miniaturizing a wide variety of devices. However, their application has been severely hindered by the need to cool them to extremely low temperature using liquid helium ...
Fu-Sheng Guo +5 more
semanticscholar +1 more source
Coordination chemistry reviews, 2020 Organometallic quinone methides (OM-QMs) have unique chemical and biological properties compared to their purely organic counterparts, but their originality has not previously been delineated in review form.
A. Vessières +3 more
semanticscholar +1 more source