Results 11 to 20 of about 12,941 (225)
Metallocene Coordination to Neutral Alkaline Earth Metal Complexes. [PDF]
Chem Asian JReactions between a series of geometrically constrained, Lewis acidic group 2 metal diamide complexes, and first row transition metal metallocenes have given a range of adducts in which the metallocene coordinates to the group 2 metal center through one of its cyclopentadienyl rings.
Parr JM, Mullins J, Evans MJ, Jones C.
europepmc +2 more sources
Study of Ziegler-Natta/(2-PhInd)2ZrCl2 hybrid catalysts performance in slurry propylene polymerization [PDF]
Polyolefins Journal, 2015 Several types of hybrid catalysts are made through mixing of 4th generation Ziegler-Natta (ZN) and (2-PhInd)2ZrCl2 metallocene catalysts using triethylaluminum (TEA) as coupling agent.
Gholam-Reza Nejabat +7 more
doaj +1 more source
Chemical Properties of Metallocene-Filled Carbon Nanotubes to Tailor Toxicity in Plants
Biology and Life Sciences Forum, 2023 Metallocenes are toxic chemicals that are used for the growth of carbon nanotubes (CNTs). The study of the toxicity of metallocenes on plants is very important. It governs the issues of genetics.
Marianna V. Kharlamova
doaj +1 more source
Use of foliar fertilizers on soybeans in the Republic of Tatarstan
BIO Web of Conferences, 2020 In 2018, studies were conducted to assess the impact of foliar feeding with complex fertilizers on the yield and grain quality of two soybean varieties.
Kolesar Valeria +3 more
doaj +1 more source
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
Molecules, 2023 In the present paper, the photophysical properties of metallocene-4-amino-1,8-naphthalimide-piperazine molecules (1-M2+), as well as their oxidized and protonated derivatives (1−M3+, 1-M2+-H+, and 1-M3+-H+), where M = Fe, Co, and Ni, were studied via DFT
Christina Eleftheria Tzeliou +1 more
doaj +1 more source
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
Metallocene Polyethylene Wax Synthesis [PDF]
Macromolecules, 2020 Solid polymethylaluminoxane (sMAO) supported ansa-bridged permethylindenyl zirconocenes Me2SB(CpR,I*)ZrX2 ({(η5-C9Me6)Me2Si(η5-C5H3R)}ZrX2; R = H, Me, and nBu; X = Cl, Br, Me, and CH2Ph) have been ...
Lamb, JV +4 more
openaire +1 more source